Date   

Re: Analyzer: CloudIQ vs Airspy HF+

Simon Brown
 

Ken,

 

Yes, indeed you do have instability, that’s a good comparison.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Alexander
Sent: 28 November 2018 04:50
To: SDR-Radio@groups.io
Subject: [SDR-Radio] Analyzer: CloudIQ vs Airspy HF+

 

Further to a recent thread I can no longer find, I ran an 8 hour overnight IQ recording of a portion of the MW band with my Airspy HF+ to compare with recent recordings made with my CloudIQ.  Looking at the two attached plots it appears the CloudIQ definitely has some stability issues, which I will take up with RFSpace.

 

Regards,

 

Ken Alexander

So Phisai, Thailand


Re: New Red Pitaya

Paul NN4F
 

Sounds like good specs....

--
Paul Jones - NN4F
Email: paul@...


On Nov 27, 2018, at 17:05, Simon Brown <simon@...> wrote:

Hi,

 

https://www.redpitaya.com/n86/new-stemlab-sdr

 

Looks very interesting. Anyone from red Pitaya here? I can’t find the API documentation…

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 


Analyzer: CloudIQ vs Airspy HF+

Ken Alexander
 

Further to a recent thread I can no longer find, I ran an 8 hour overnight IQ recording of a portion of the MW band with my Airspy HF+ to compare with recent recordings made with my CloudIQ.  Looking at the two attached plots it appears the CloudIQ definitely has some stability issues, which I will take up with RFSpace.

Regards,

Ken Alexander
So Phisai, Thailand


Network source

mael.pataud@...
 

I all, I'm new in sdr and in groups.io. I'm currently working with National Instrument devices with Labview graphical langage. I Have a NI oscilloscope digitizer that I can use to acquire the complete HF band and I can do a DSP to get a band of interest. I would like to send my data to a sdr client.
Is it possible to use a custom IQ network source to feed the console ?
For example can I send an IQ stream by TCP or UDP from a digitizer to the client.
Basically it's similar to an external radios but with network in place of IF.
 I've seen that it's possible to set a serveur but can I replace this server with my own acquisition system. Is the communication protocol open ?
Thanks


My V3 server not seen on sdr-radio

Pedro M.J. Wyns (on Dell XPS)
 

I run a Perseus with SDR V3 and I have opened up my port 50101 on my router for both TCP and UDP to the local PC address.
My windows firewall is off.

I can start the server service but I do not get the OK plus timestamp and I do not see my server on the list.

Any ideas what can be wrong.

I my windows task manager I see TWO sdr servers running ???


New Red Pitaya

Simon Brown
 

Hi,

 

https://www.redpitaya.com/n86/new-stemlab-sdr

 

Looks very interesting. Anyone from red Pitaya here? I can’t find the API documentation…

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 


Re: Supplier experience

D R
 

Hi Ingolf,

I emailed them last night and got the same reply back as you.  Not much we can do except wait and grumble, I suppose.  We'll have to see what happens next week, then a couple of messages to Yousef Touill might be in order to see what levers he can pull.

Regards,
Dave


On Tuesday, 27 November 2018, 18:06:42 GMT, sm6fhz <ingolf.fhz@...> wrote:


Hi Dave.
Have you heard anything from ITEAD so far? I mailed them this morning and got this replay at lunchtime (Swedish time):

Snipe
Dear Ingolf,

it is backordered
Please wait for the shipment in about one week
thx
end Snipe.

When I placed the order it clearly said "In stock" in bright green text for this Airspy HF+. It still says so.
I can not say I am impressed nor totally happy with the way ITEAD communicates their ability to deliver their goods. As I understand it, it was a totally false statement.

I do hope the "week" they now communicate is more true than previous statements.

73 / Ingolf, SM6FHZ


Re: Supplier experience

sm6fhz
 

Hi Dave.
Have you heard anything from ITEAD so far? I mailed them this morning and got this replay at lunchtime (Swedish time):

Snipe
Dear Ingolf,

it is backordered
Please wait for the shipment in about one week
thx
end Snipe.

When I placed the order it clearly said "In stock" in bright green text for this Airspy HF+. It still says so.
I can not say I am impressed nor totally happy with the way ITEAD communicates their ability to deliver their goods. As I understand it, it was a totally false statement.

I do hope the "week" they now communicate is more true than previous statements.

73 / Ingolf, SM6FHZ


Re: Data Repeater - Interface to RSS?

Larry Dodd
 

Thanks Simon I appreciate that. 
Larry


On Nov 27, 2018, at 11:42 AM, Simon Brown <simon@...> wrote:

OK,

 

With the UDP client – I think best to get that running and write a server inside. I’ll help you with this.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 27 November 2018 16:07
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I forgot to mention that the number of Channels refers to the number of frequencies shown on the spectrograph.  In RSS 100 channels would produce a very narrow vertical display whilst 500 channels would display a much taller vertical display. RSS displays the various frequencies vertically.  We normally use 500 channels to display 15 to 30 MHz or 15 MHz bandwidth.

<image001.png>

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Tuesday, November 27, 2018 7:04 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

Yes I agree. I will send your questions to Jim Sky so you get an answer from a programmers mind. I’ll let you know what he says. 

 

Yes it would be preferred to be able to see the Spectrograph running in RSS in real time. Then there would be no problem in saving the files to .sps format from RSS. RSS can listen to 127.0.0.1:8888 for example and display the TCP server stream if the stream has been decimated (reduce the raw data) to the point it can handle the stream. RSS would be set to receiver = RTL Bridge/TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:


"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz in this example, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

I’ll run your question by Jim Sky and  maybe he can better answer your questions. I’ll provide his answer when I get it.  Thanks again!

Larry

 


On Nov 27, 2018, at 2:23 AM, Simon Brown <simon@...> wrote:

Larry,

 

We’re going round in circles here. I have your links, I would like to know:

 

·       What features does RSS provide that you do not have in the Analyser – this is for documentation on my website (I see that RSS runs real-time whereas Analyser runs from recordings only),

·       What is the relevance of Channels? If I provide an IQ stream over a 5MHz bandwidth then surely channels are redundant?

 

I already have a data repeater, I can get the documentation updated so 3rd-party programs can use the supplied DLL and sample code to interface to the console.

 

Finally SPS – please find a reference to this SPS file format, I can probably generate that myself but anyway I am interested to know what it is. My radio astronomy knowledge is very limited, your help is appreciated.

 

When I have the answers I (we) can look at getting RSS supported as required.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 08:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is the main information from Jim Sky about RSS format.

 

If you want the functionality that RSS provides but you do not have one of the receivers RSS supports, you can send your data to RSS over a TCP connection as long as you format it properly.  This assumes you know how to get reduced spectral data from your receiver (or can reduce the raw data ) and  that you know how to do a little programming in Python, Java, VB, or whatever.

Your program must act as a TCP server and listen for a connection on port 8888 of the loopback address 127.0.0.1.   Configure RSS under Options /Radio to RTL Bridge / TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

The full

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 2:26 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi Larry,

 

Can you send me a .SPS file format reference? Apart from SPS, the Analyser does the same as the RSS display except for orientation and, of course the higher resolution in the Analyser.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 07:06
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

The problem I see is that what we need to end up with is a .sps file.  The .sps files from RSS are sent to NASA for processing and archiving, and scientific analyzation.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:56 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I’ll attach a snip of a running RSS display.  You can see the displayed Hi Lo frequency in the boxes on the upper right side.  Those numbers come from the SDR you don’t set them there.  The receiver Color Offset and Color Gain are set by the sliders and affect the RSS display only.  I’ll let you know what Jim Sky says when he replies to me.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:45 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

No I don’t think so but I will run your question and my answer by Jim Sky to verify I’m say the correct thing.  I believe the SDR sets is upper and lower frequencies of bandwidth and RSS just displays those frequencies.  RSS can set its display color offset and Color Gain however by entering in numbers with the slider or actual numbers from the keyboard.  This only affects how the RSS display looks. RSS also sets the number of channels like 411, Display sweeps like 800 and Avg. Sweeps like 10. 

 

I’ll send this to Jim Sky and Dick Flagg to verify what I’m saying and I’ll let you know what they say.

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 0:55 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Larry,

 

The Analyser is part of SDR Console. I think the Analyser display is the same as the RSS display. My interface does not allow RSS to tune it, you could do this via CAT though.

 

So:

·       Does RSS tune the SDR?

·       If it does, how?

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 02:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thanks. I’ll study it over. Looks like what it is saying is to run SDRConsole and record the spectrogram I/Q then open RSS somehow and  play it. That last part may be a problem as RSS will play previously recorded files but they have to be .sps format I think. I’ll see what I can do and report back. 

Larry


On Nov 23, 2018, at 11:00 AM, Larry Dodd <101science@...> wrote:

Ok Thanks!

Larry

 


On Nov 23, 2018, at 1:36 AM, Simon Brown <simon@...> wrote:

I’ll do the doc today.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 22:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Ok that will be great Simon. Appreciate your work. 

Larry


On Nov 22, 2018, at 4:25 PM, Simon Brown <simon@...> wrote:

OK,

 

I’ll get it documented. I think it does what you want.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 21:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

no I’m not familiar with the analyzer. 

Larry


On Nov 22, 2018, at 3:05 PM, Simon Brown <simon@...> wrote:

Larry, I’ve just had a look at RSS. Have you seen the Analyser? As far as I can see, this is the same thing.

 

I will update the Analyser documentation, it’s somewhat sparse.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 18:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thank you sir.  It is much appreciated.

Cheers,

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Thursday, November 22, 2018 13:16 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi,

 

Making excellent progress with the Lime at the moment, I’ll look at this next week with any luck.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 14:48
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Of course I can help also as a long time RSS RadioJove volunteer and user.  We have previously been using SDRPlay but its limited bandwidth and digital artifacts has limited our RadioJove Radio Astronomy work.  The LimeSDR USB will be a gem with your SDRConsole software to RSS,  a dream come true.  We need to have the output in RSS format for several reasons as it is our standard spectrograph.

 

Thanks again,

Larry Dodd, K4LED

101science@...

NASA RadioJove Volunteer Project

 

 

From: Larry Dodd
Sent: Thursday, November 22, 2018 9:05 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is a link that gives RSS interface information. 

 

 

Link to download RSS. 

 

 

Jim Sky is the author of RSS and he can help you with anything else you need. I’ll tell him you may be contacting  him. 

 

 

Thank you Simon,

Larry Dodd

RadioJove 

 


On Nov 22, 2018, at 7:41 AM, Simon Brown <simon@...> wrote:

Hi,

 

I would need a link to the RSS interface.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 10:10
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Data Repeater - Interface to RSS?

 

Is the "Data Repeater" available today?  Could it be used to send SDRConsole I/Q data to the Radio Sky Spectrograph program? Thanks, Larry K4LED

 

 

 

 

 

 

 


Re: Data Repeater - Interface to RSS?

Simon Brown
 

OK,

 

With the UDP client – I think best to get that running and write a server inside. I’ll help you with this.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 27 November 2018 16:07
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I forgot to mention that the number of Channels refers to the number of frequencies shown on the spectrograph.  In RSS 100 channels would produce a very narrow vertical display whilst 500 channels would display a much taller vertical display. RSS displays the various frequencies vertically.  We normally use 500 channels to display 15 to 30 MHz or 15 MHz bandwidth.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Tuesday, November 27, 2018 7:04 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

Yes I agree. I will send your questions to Jim Sky so you get an answer from a programmers mind. I’ll let you know what he says. 

 

Yes it would be preferred to be able to see the Spectrograph running in RSS in real time. Then there would be no problem in saving the files to .sps format from RSS. RSS can listen to 127.0.0.1:8888 for example and display the TCP server stream if the stream has been decimated (reduce the raw data) to the point it can handle the stream. RSS would be set to receiver = RTL Bridge/TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:


"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz in this example, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

I’ll run your question by Jim Sky and  maybe he can better answer your questions. I’ll provide his answer when I get it.  Thanks again!

Larry

 


On Nov 27, 2018, at 2:23 AM, Simon Brown <simon@...> wrote:

Larry,

 

We’re going round in circles here. I have your links, I would like to know:

 

·       What features does RSS provide that you do not have in the Analyser – this is for documentation on my website (I see that RSS runs real-time whereas Analyser runs from recordings only),

·       What is the relevance of Channels? If I provide an IQ stream over a 5MHz bandwidth then surely channels are redundant?

 

I already have a data repeater, I can get the documentation updated so 3rd-party programs can use the supplied DLL and sample code to interface to the console.

 

Finally SPS – please find a reference to this SPS file format, I can probably generate that myself but anyway I am interested to know what it is. My radio astronomy knowledge is very limited, your help is appreciated.

 

When I have the answers I (we) can look at getting RSS supported as required.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 08:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is the main information from Jim Sky about RSS format.

 

If you want the functionality that RSS provides but you do not have one of the receivers RSS supports, you can send your data to RSS over a TCP connection as long as you format it properly.  This assumes you know how to get reduced spectral data from your receiver (or can reduce the raw data ) and  that you know how to do a little programming in Python, Java, VB, or whatever.

Your program must act as a TCP server and listen for a connection on port 8888 of the loopback address 127.0.0.1.   Configure RSS under Options /Radio to RTL Bridge / TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

The full

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 2:26 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi Larry,

 

Can you send me a .SPS file format reference? Apart from SPS, the Analyser does the same as the RSS display except for orientation and, of course the higher resolution in the Analyser.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 07:06
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

The problem I see is that what we need to end up with is a .sps file.  The .sps files from RSS are sent to NASA for processing and archiving, and scientific analyzation.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:56 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I’ll attach a snip of a running RSS display.  You can see the displayed Hi Lo frequency in the boxes on the upper right side.  Those numbers come from the SDR you don’t set them there.  The receiver Color Offset and Color Gain are set by the sliders and affect the RSS display only.  I’ll let you know what Jim Sky says when he replies to me.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:45 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

No I don’t think so but I will run your question and my answer by Jim Sky to verify I’m say the correct thing.  I believe the SDR sets is upper and lower frequencies of bandwidth and RSS just displays those frequencies.  RSS can set its display color offset and Color Gain however by entering in numbers with the slider or actual numbers from the keyboard.  This only affects how the RSS display looks. RSS also sets the number of channels like 411, Display sweeps like 800 and Avg. Sweeps like 10. 

 

I’ll send this to Jim Sky and Dick Flagg to verify what I’m saying and I’ll let you know what they say.

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 0:55 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Larry,

 

The Analyser is part of SDR Console. I think the Analyser display is the same as the RSS display. My interface does not allow RSS to tune it, you could do this via CAT though.

 

So:

·       Does RSS tune the SDR?

·       If it does, how?

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 02:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thanks. I’ll study it over. Looks like what it is saying is to run SDRConsole and record the spectrogram I/Q then open RSS somehow and  play it. That last part may be a problem as RSS will play previously recorded files but they have to be .sps format I think. I’ll see what I can do and report back. 

Larry


On Nov 23, 2018, at 11:00 AM, Larry Dodd <101science@...> wrote:

Ok Thanks!

Larry

 


On Nov 23, 2018, at 1:36 AM, Simon Brown <simon@...> wrote:

I’ll do the doc today.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 22:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Ok that will be great Simon. Appreciate your work. 

Larry


On Nov 22, 2018, at 4:25 PM, Simon Brown <simon@...> wrote:

OK,

 

I’ll get it documented. I think it does what you want.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 21:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

no I’m not familiar with the analyzer. 

Larry


On Nov 22, 2018, at 3:05 PM, Simon Brown <simon@...> wrote:

Larry, I’ve just had a look at RSS. Have you seen the Analyser? As far as I can see, this is the same thing.

 

I will update the Analyser documentation, it’s somewhat sparse.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 18:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thank you sir.  It is much appreciated.

Cheers,

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Thursday, November 22, 2018 13:16 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi,

 

Making excellent progress with the Lime at the moment, I’ll look at this next week with any luck.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 14:48
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Of course I can help also as a long time RSS RadioJove volunteer and user.  We have previously been using SDRPlay but its limited bandwidth and digital artifacts has limited our RadioJove Radio Astronomy work.  The LimeSDR USB will be a gem with your SDRConsole software to RSS,  a dream come true.  We need to have the output in RSS format for several reasons as it is our standard spectrograph.

 

Thanks again,

Larry Dodd, K4LED

101science@...

NASA RadioJove Volunteer Project

 

 

From: Larry Dodd
Sent: Thursday, November 22, 2018 9:05 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is a link that gives RSS interface information. 

 

 

Link to download RSS. 

 

 

Jim Sky is the author of RSS and he can help you with anything else you need. I’ll tell him you may be contacting  him. 

 

 

Thank you Simon,

Larry Dodd

RadioJove 

 


On Nov 22, 2018, at 7:41 AM, Simon Brown <simon@...> wrote:

Hi,

 

I would need a link to the RSS interface.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 10:10
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Data Repeater - Interface to RSS?

 

Is the "Data Repeater" available today?  Could it be used to send SDRConsole I/Q data to the Radio Sky Spectrograph program? Thanks, Larry K4LED

 

 

 

 

 

 

 


Re: Difficulty with FT-891 after using for a while.

Joe KI5O
 

Thank you Jeff.

That got the ball rolling and had me look into COM ports available for the radio.  Turns out I lost some Yaesu drivers for the USB connection when I made some adjustments to the OS.

Repairing and replacing the Yaesu drivers made the radio show up again, and also allowed control via OmniRig.

Thanks for the assist and information!

Joe
KG5WRZ


Re: Data Repeater - Interface to RSS?

Larry Dodd
 

Simon

I forgot to mention that the number of Channels refers to the number of frequencies shown on the spectrograph.  In RSS 100 channels would produce a very narrow vertical display whilst 500 channels would display a much taller vertical display. RSS displays the various frequencies vertically.  We normally use 500 channels to display 15 to 30 MHz or 15 MHz bandwidth.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Tuesday, November 27, 2018 7:04 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

Yes I agree. I will send your questions to Jim Sky so you get an answer from a programmers mind. I’ll let you know what he says. 

 

Yes it would be preferred to be able to see the Spectrograph running in RSS in real time. Then there would be no problem in saving the files to .sps format from RSS. RSS can listen to 127.0.0.1:8888 for example and display the TCP server stream if the stream has been decimated (reduce the raw data) to the point it can handle the stream. RSS would be set to receiver = RTL Bridge/TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:


"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz in this example, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

I’ll run your question by Jim Sky and  maybe he can better answer your questions. I’ll provide his answer when I get it.  Thanks again!

Larry

 


On Nov 27, 2018, at 2:23 AM, Simon Brown <simon@...> wrote:

Larry,

 

We’re going round in circles here. I have your links, I would like to know:

 

·         What features does RSS provide that you do not have in the Analyser – this is for documentation on my website (I see that RSS runs real-time whereas Analyser runs from recordings only),

·         What is the relevance of Channels? If I provide an IQ stream over a 5MHz bandwidth then surely channels are redundant?

 

I already have a data repeater, I can get the documentation updated so 3rd-party programs can use the supplied DLL and sample code to interface to the console.

 

Finally SPS – please find a reference to this SPS file format, I can probably generate that myself but anyway I am interested to know what it is. My radio astronomy knowledge is very limited, your help is appreciated.

 

When I have the answers I (we) can look at getting RSS supported as required.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 08:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is the main information from Jim Sky about RSS format.

 

If you want the functionality that RSS provides but you do not have one of the receivers RSS supports, you can send your data to RSS over a TCP connection as long as you format it properly.  This assumes you know how to get reduced spectral data from your receiver (or can reduce the raw data ) and  that you know how to do a little programming in Python, Java, VB, or whatever.

Your program must act as a TCP server and listen for a connection on port 8888 of the loopback address 127.0.0.1.   Configure RSS under Options /Radio to RTL Bridge / TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

The full

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 2:26 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi Larry,

 

Can you send me a .SPS file format reference? Apart from SPS, the Analyser does the same as the RSS display except for orientation and, of course the higher resolution in the Analyser.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 07:06
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

The problem I see is that what we need to end up with is a .sps file.  The .sps files from RSS are sent to NASA for processing and archiving, and scientific analyzation.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:56 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I’ll attach a snip of a running RSS display.  You can see the displayed Hi Lo frequency in the boxes on the upper right side.  Those numbers come from the SDR you don’t set them there.  The receiver Color Offset and Color Gain are set by the sliders and affect the RSS display only.  I’ll let you know what Jim Sky says when he replies to me.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:45 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

No I don’t think so but I will run your question and my answer by Jim Sky to verify I’m say the correct thing.  I believe the SDR sets is upper and lower frequencies of bandwidth and RSS just displays those frequencies.  RSS can set its display color offset and Color Gain however by entering in numbers with the slider or actual numbers from the keyboard.  This only affects how the RSS display looks. RSS also sets the number of channels like 411, Display sweeps like 800 and Avg. Sweeps like 10. 

 

I’ll send this to Jim Sky and Dick Flagg to verify what I’m saying and I’ll let you know what they say.

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 0:55 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Larry,

 

The Analyser is part of SDR Console. I think the Analyser display is the same as the RSS display. My interface does not allow RSS to tune it, you could do this via CAT though.

 

So:

·         Does RSS tune the SDR?

·         If it does, how?

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 02:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thanks. I’ll study it over. Looks like what it is saying is to run SDRConsole and record the spectrogram I/Q then open RSS somehow and  play it. That last part may be a problem as RSS will play previously recorded files but they have to be .sps format I think. I’ll see what I can do and report back. 

Larry


On Nov 23, 2018, at 11:00 AM, Larry Dodd <101science@...> wrote:

Ok Thanks!

Larry

 


On Nov 23, 2018, at 1:36 AM, Simon Brown <simon@...> wrote:

I’ll do the doc today.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 22:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Ok that will be great Simon. Appreciate your work. 

Larry


On Nov 22, 2018, at 4:25 PM, Simon Brown <simon@...> wrote:

OK,

 

I’ll get it documented. I think it does what you want.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 21:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

no I’m not familiar with the analyzer. 

Larry


On Nov 22, 2018, at 3:05 PM, Simon Brown <simon@...> wrote:

Larry, I’ve just had a look at RSS. Have you seen the Analyser? As far as I can see, this is the same thing.

 

I will update the Analyser documentation, it’s somewhat sparse.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 18:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thank you sir.  It is much appreciated.

Cheers,

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Thursday, November 22, 2018 13:16 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi,

 

Making excellent progress with the Lime at the moment, I’ll look at this next week with any luck.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 14:48
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Of course I can help also as a long time RSS RadioJove volunteer and user.  We have previously been using SDRPlay but its limited bandwidth and digital artifacts has limited our RadioJove Radio Astronomy work.  The LimeSDR USB will be a gem with your SDRConsole software to RSS,  a dream come true.  We need to have the output in RSS format for several reasons as it is our standard spectrograph.

 

Thanks again,

Larry Dodd, K4LED

101science@...

NASA RadioJove Volunteer Project

 

 

From: Larry Dodd
Sent: Thursday, November 22, 2018 9:05 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is a link that gives RSS interface information. 

 

 

Link to download RSS. 

 

 

Jim Sky is the author of RSS and he can help you with anything else you need. I’ll tell him you may be contacting  him. 

 

 

Thank you Simon,

Larry Dodd

RadioJove 

 


On Nov 22, 2018, at 7:41 AM, Simon Brown <simon@...> wrote:

Hi,

 

I would need a link to the RSS interface.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 10:10
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Data Repeater - Interface to RSS?

 

Is the "Data Repeater" available today?  Could it be used to send SDRConsole I/Q data to the Radio Sky Spectrograph program? Thanks, Larry K4LED

 

 

 

 

 

 

 


Re: IQ Data Repeater, UDP Client Source

Larry Dodd
 

Simon
That was probably me and we are working the issue already under the “Data Repeater” thread. 
Thanks
Larry Dodd, K4LED


On Nov 27, 2018, at 2:15 AM, Simon Brown <simon@...> wrote:

Hi,

 

I received a reminder request for the sample client source code, but can’t find the e-mail to reply to . Whoever it was, please send the request again…

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 


Re: Data Repeater - Interface to RSS?

Larry Dodd
 

Simon 
Yes I agree. I will send your questions to Jim Sky so you get an answer from a programmers mind. I’ll let you know what he says. 

Yes it would be preferred to be able to see the Spectrograph running in RSS in real time. Then there would be no problem in saving the files to .sps format from RSS. RSS can listen to 127.0.0.1:8888 for example and display the TCP server stream if the stream has been decimated (reduce the raw data) to the point it can handle the stream. RSS would be set to receiver = RTL Bridge/TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz in this example, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

I’ll run your question by Jim Sky and  maybe he can better answer your questions. I’ll provide his answer when I get it.  Thanks again!
Larry



On Nov 27, 2018, at 2:23 AM, Simon Brown <simon@...> wrote:

Larry,

 

We’re going round in circles here. I have your links, I would like to know:

 

  • What features does RSS provide that you do not have in the Analyser – this is for documentation on my website (I see that RSS runs real-time whereas Analyser runs from recordings only),
  • What is the relevance of Channels? If I provide an IQ stream over a 5MHz bandwidth then surely channels are redundant?

 

I already have a data repeater, I can get the documentation updated so 3rd-party programs can use the supplied DLL and sample code to interface to the console.

 

Finally SPS – please find a reference to this SPS file format, I can probably generate that myself but anyway I am interested to know what it is. My radio astronomy knowledge is very limited, your help is appreciated.

 

When I have the answers I (we) can look at getting RSS supported as required.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 08:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is the main information from Jim Sky about RSS format.

 

If you want the functionality that RSS provides but you do not have one of the receivers RSS supports, you can send your data to RSS over a TCP connection as long as you format it properly.  This assumes you know how to get reduced spectral data from your receiver (or can reduce the raw data ) and  that you know how to do a little programming in Python, Java, VB, or whatever.

Your program must act as a TCP server and listen for a connection on port 8888 of the loopback address 127.0.0.1.   Configure RSS under Options /Radio to RTL Bridge / TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

The full

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 2:26 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi Larry,

 

Can you send me a .SPS file format reference? Apart from SPS, the Analyser does the same as the RSS display except for orientation and, of course the higher resolution in the Analyser.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 07:06
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

The problem I see is that what we need to end up with is a .sps file.  The .sps files from RSS are sent to NASA for processing and archiving, and scientific analyzation.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:56 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I’ll attach a snip of a running RSS display.  You can see the displayed Hi Lo frequency in the boxes on the upper right side.  Those numbers come from the SDR you don’t set them there.  The receiver Color Offset and Color Gain are set by the sliders and affect the RSS display only.  I’ll let you know what Jim Sky says when he replies to me.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:45 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

No I don’t think so but I will run your question and my answer by Jim Sky to verify I’m say the correct thing.  I believe the SDR sets is upper and lower frequencies of bandwidth and RSS just displays those frequencies.  RSS can set its display color offset and Color Gain however by entering in numbers with the slider or actual numbers from the keyboard.  This only affects how the RSS display looks. RSS also sets the number of channels like 411, Display sweeps like 800 and Avg. Sweeps like 10. 

 

I’ll send this to Jim Sky and Dick Flagg to verify what I’m saying and I’ll let you know what they say.

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 0:55 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Larry,

 

The Analyser is part of SDR Console. I think the Analyser display is the same as the RSS display. My interface does not allow RSS to tune it, you could do this via CAT though.

 

So:

  • Does RSS tune the SDR?
  • If it does, how?

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 02:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thanks. I’ll study it over. Looks like what it is saying is to run SDRConsole and record the spectrogram I/Q then open RSS somehow and  play it. That last part may be a problem as RSS will play previously recorded files but they have to be .sps format I think. I’ll see what I can do and report back. 

Larry


On Nov 23, 2018, at 11:00 AM, Larry Dodd <101science@...> wrote:

Ok Thanks!

Larry

 


On Nov 23, 2018, at 1:36 AM, Simon Brown <simon@...> wrote:

I’ll do the doc today.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 22:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Ok that will be great Simon. Appreciate your work. 

Larry


On Nov 22, 2018, at 4:25 PM, Simon Brown <simon@...> wrote:

OK,

 

I’ll get it documented. I think it does what you want.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 21:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

no I’m not familiar with the analyzer. 

Larry


On Nov 22, 2018, at 3:05 PM, Simon Brown <simon@...> wrote:

Larry, I’ve just had a look at RSS. Have you seen the Analyser? As far as I can see, this is the same thing.

 

I will update the Analyser documentation, it’s somewhat sparse.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 18:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thank you sir.  It is much appreciated.

Cheers,

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Thursday, November 22, 2018 13:16 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi,

 

Making excellent progress with the Lime at the moment, I’ll look at this next week with any luck.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 14:48
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Of course I can help also as a long time RSS RadioJove volunteer and user.  We have previously been using SDRPlay but its limited bandwidth and digital artifacts has limited our RadioJove Radio Astronomy work.  The LimeSDR USB will be a gem with your SDRConsole software to RSS,  a dream come true.  We need to have the output in RSS format for several reasons as it is our standard spectrograph.

 

Thanks again,

Larry Dodd, K4LED

101science@...

NASA RadioJove Volunteer Project

 

 

From: Larry Dodd
Sent: Thursday, November 22, 2018 9:05 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is a link that gives RSS interface information. 

 

 

Link to download RSS. 

 

 

Jim Sky is the author of RSS and he can help you with anything else you need. I’ll tell him you may be contacting  him. 

 

 

Thank you Simon,

Larry Dodd

RadioJove 

 


On Nov 22, 2018, at 7:41 AM, Simon Brown <simon@...> wrote:

Hi,

 

I would need a link to the RSS interface.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 10:10
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Data Repeater - Interface to RSS?

 

Is the "Data Repeater" available today?  Could it be used to send SDRConsole I/Q data to the Radio Sky Spectrograph program? Thanks, Larry K4LED

 

 

 

 

 

 


S-meter feature #sdrconsolev3

Fernando Gómez
 

Hello Simon,

I think it may be interesting that the signal meter can show two values at the same time or maybe two scales. For example, the scale in S units and the numbers next to another type, such as dbm, is what in my case usually interests me the most, depending on the type of signal I want to evaluate.
 
I do not know if it can be easy to implement, so excuse me if it's not a good idea.
 
Anyway, thank you very much for your effort and work, and I hope the puppy is well!
 
Thank's!!


Re: Data Repeater - Interface to RSS?

Simon Brown
 

Larry,

 

We’re going round in circles here. I have your links, I would like to know:

 

  • What features does RSS provide that you do not have in the Analyser – this is for documentation on my website (I see that RSS runs real-time whereas Analyser runs from recordings only),
  • What is the relevance of Channels? If I provide an IQ stream over a 5MHz bandwidth then surely channels are redundant?

 

I already have a data repeater, I can get the documentation updated so 3rd-party programs can use the supplied DLL and sample code to interface to the console.

 

Finally SPS – please find a reference to this SPS file format, I can probably generate that myself but anyway I am interested to know what it is. My radio astronomy knowledge is very limited, your help is appreciated.

 

When I have the answers I (we) can look at getting RSS supported as required.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 08:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is the main information from Jim Sky about RSS format.

 

If you want the functionality that RSS provides but you do not have one of the receivers RSS supports, you can send your data to RSS over a TCP connection as long as you format it properly.  This assumes you know how to get reduced spectral data from your receiver (or can reduce the raw data ) and  that you know how to do a little programming in Python, Java, VB, or whatever.

Your program must act as a TCP server and listen for a connection on port 8888 of the loopback address 127.0.0.1.   Configure RSS under Options /Radio to RTL Bridge / TCP. When you press the Start Button in RSS, it will attempt to connect to your custom software server. Your program should accept the connection and send this string back to RSS:

"F " & CenterFrequencyHertz & "|" &"S "& BandwidthHertz & "|" & "O " & OffsetHertz & "|" & "C " & NumberOfChannels & "|"

For example: F 21000000|S 5000000|O 0|C 500

This would tell RSS that the center frequency of the observation is 21 MHz.  The bandwidth is 5 MHz, so the display will run from 21 + 2.5 to 21 - 2.5 MHz,  or 18.5 MHz to 23.5 MHz. The O is for the offset and is useful for when a downconverter is used.  Here O is set to zero.  Finally, C denotes the number of channels.  This is currently limited to 100 - 512 channels. Each of these parameters is separated by the pipe symbol "|".

The data itself is in two byte binary format.  Each sample is sent as a binary word with LoHi byte order and should be restricted to 12 bit digitization.  The data is sent with the highest frequency first, descending to the lowest.  At the end of each sweep two FE hex bytes (254 decimal) are sent. and the next sweep begins. There are no timestamps.  RSS keeps track of the time and assumes an even sweep rate.

 

The full

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 2:26 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi Larry,

 

Can you send me a .SPS file format reference? Apart from SPS, the Analyser does the same as the RSS display except for orientation and, of course the higher resolution in the Analyser.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 07:06
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

The problem I see is that what we need to end up with is a .sps file.  The .sps files from RSS are sent to NASA for processing and archiving, and scientific analyzation.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:56 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

I’ll attach a snip of a running RSS display.  You can see the displayed Hi Lo frequency in the boxes on the upper right side.  Those numbers come from the SDR you don’t set them there.  The receiver Color Offset and Color Gain are set by the sliders and affect the RSS display only.  I’ll let you know what Jim Sky says when he replies to me.

Larry

 

Sent from Mail for Windows 10

 

From: Larry Dodd
Sent: Saturday, November 24, 2018 1:45 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

No I don’t think so but I will run your question and my answer by Jim Sky to verify I’m say the correct thing.  I believe the SDR sets is upper and lower frequencies of bandwidth and RSS just displays those frequencies.  RSS can set its display color offset and Color Gain however by entering in numbers with the slider or actual numbers from the keyboard.  This only affects how the RSS display looks. RSS also sets the number of channels like 411, Display sweeps like 800 and Avg. Sweeps like 10. 

 

I’ll send this to Jim Sky and Dick Flagg to verify what I’m saying and I’ll let you know what they say.

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Saturday, November 24, 2018 0:55 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Larry,

 

The Analyser is part of SDR Console. I think the Analyser display is the same as the RSS display. My interface does not allow RSS to tune it, you could do this via CAT though.

 

So:

  • Does RSS tune the SDR?
  • If it does, how?

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 24 November 2018 02:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thanks. I’ll study it over. Looks like what it is saying is to run SDRConsole and record the spectrogram I/Q then open RSS somehow and  play it. That last part may be a problem as RSS will play previously recorded files but they have to be .sps format I think. I’ll see what I can do and report back. 

Larry


On Nov 23, 2018, at 11:00 AM, Larry Dodd <101science@...> wrote:

Ok Thanks!

Larry

 


On Nov 23, 2018, at 1:36 AM, Simon Brown <simon@...> wrote:

I’ll do the doc today.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 22:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Ok that will be great Simon. Appreciate your work. 

Larry


On Nov 22, 2018, at 4:25 PM, Simon Brown <simon@...> wrote:

OK,

 

I’ll get it documented. I think it does what you want.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 21:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon 

no I’m not familiar with the analyzer. 

Larry


On Nov 22, 2018, at 3:05 PM, Simon Brown <simon@...> wrote:

Larry, I’ve just had a look at RSS. Have you seen the Analyser? As far as I can see, this is the same thing.

 

I will update the Analyser documentation, it’s somewhat sparse.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 18:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Thank you sir.  It is much appreciated.

Cheers,

Larry

 

Sent from Mail for Windows 10

 

From: Simon Brown
Sent: Thursday, November 22, 2018 13:16 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Hi,

 

Making excellent progress with the Lime at the moment, I’ll look at this next week with any luck.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 14:48
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Of course I can help also as a long time RSS RadioJove volunteer and user.  We have previously been using SDRPlay but its limited bandwidth and digital artifacts has limited our RadioJove Radio Astronomy work.  The LimeSDR USB will be a gem with your SDRConsole software to RSS,  a dream come true.  We need to have the output in RSS format for several reasons as it is our standard spectrograph.

 

Thanks again,

Larry Dodd, K4LED

101science@...

NASA RadioJove Volunteer Project

 

 

From: Larry Dodd
Sent: Thursday, November 22, 2018 9:05 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Data Repeater - Interface to RSS?

 

Simon

Here is a link that gives RSS interface information. 

 

 

Link to download RSS. 

 

 

Jim Sky is the author of RSS and he can help you with anything else you need. I’ll tell him you may be contacting  him. 

 

 

Thank you Simon,

Larry Dodd

RadioJove 

 


On Nov 22, 2018, at 7:41 AM, Simon Brown <simon@...> wrote:

Hi,

 

I would need a link to the RSS interface.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 22 November 2018 10:10
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Data Repeater - Interface to RSS?

 

Is the "Data Repeater" available today?  Could it be used to send SDRConsole I/Q data to the Radio Sky Spectrograph program? Thanks, Larry K4LED

 

 

 

 

 

 


IQ Data Repeater, UDP Client Source

Simon Brown
 

Hi,

 

I received a reminder request for the sample client source code, but can’t find the e-mail to reply to . Whoever it was, please send the request again…

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 


Re: Feature Request: Auto-Tune Satellites (Please, Pretty Please)

Albert (PA5OXW)
 

Hi Simon,
Knowing your to-do and all other projects in your head (well not really...)  very happy with your this will happen  statement !   😉 Albert PD0OXW


Re: SDR-Server v3 stuttering on laptop PCs #sdrconsolev3 #airspyhfplus #sdrplay

HERB KEATON N2GEW
 

Nick:
Thanks very much and your analysis which is quite in depth.

I checked the wireless laptop via a command prompt and google app (ping www.google.com -f -l 1492)  and that fails. It reports back the MTU is 1472. 

The Asus router under WAN Connection Type set to Automatic IP shows no MTU setting.
If I switch the Connection Type to PPPoE, that shows an MTU at 1492. 
Not being a network aficionado, I am uncertain as to what this all translates to.

Thx / 73
Herb


Re: SDR-Server v3 stuttering on laptop PCs #sdrconsolev3 #airspyhfplus #sdrplay

Nicholas Shaxted
 

Herb,

It looks as if it MAY be something awry with your network connection.

I am not sure if you are using wireless networking to transfer radio data (apart from low bandwidth consuming commands) but you could be low bandwidth due to location of one end of the link, or you maybe consuming bandwidth some other means (another device).

 

It is beginning to look as if you will need to check the size of the MTU packets on the network.

This has been a bone of contention for a very long time and if it does not match users can experience very poor performance as packets get chopped and jumbled up increasing latency and retries. This IP fragmentation usually happens when passing large packets to smaller ones.

It is generally agreed these days the Maximum Transmission Unit be set to 1500, but in some routers network interfaces it could quite easily be set to 1492 bytes.

To make it more complex Ethernet Jumbo frames can be anything from 1501 to 9198bytes.

 

In Windows 10 I think the network settings now switch Jumbo Frames off (or disable it)

 

It would be advisable to check the network interface properties on the pc running the your software and the router which will be passing data to other devices.

 

I would recommend trying to match bother router and PCs to use and MTU of 1500 to start with. On a Windows PC you can pop into network connections and select the status, then view your network properties.

You should see MTU set to 1500. If not you can probably change this by popping into Control Panel and selecting Network Connections. Select the network interface being used and check the properties (alternate mouse click). Select the card configuration and select Advanced tab. In there you will see the Jumbo Packet size and/or MTU. For best stability switch jumbo packet off.

 

Then check your router – somewhere in its configuration will be an MTU setting.

 

 

It is a bit of a long mail, but from what you have described it sounds very much as if something is breaking packets up as they get dropped going from large to small, and thus reties and resend prevail.

 

I hope you get it sorted.

 

Regards

Nick – g4ogi

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of herbk@...
Sent: Sunday, November 25, 2018 7:32 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] SDR-Server v3 stuttering on laptop PCs #sdrconsolev3 #airspyhfplus #sdrplay

 

I tried to replicate what I "thought" might have been some earlier success in limiting the stuttering by setting and resetting the USB Root Hub power management schemes. 

I did not have any success with this, but I did make note that this issue also impacts control commands sent over the LAN. In my case, I noted in switching frequencies, the response was sometimes delayed or didn't occur at all. I conclude that this is not strictly an audio issue over my LAN, but extends to CAT commands exercised over the client-server link.

Herb