Date   

Re: Evenly spaced RFI.

Simon Brown
 

A screenshot as an attachment would help 😊 .

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Paul Egan
Sent: 19 January 2022 14:55
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Evenly spaced RFI.

 

Thanks for the info, but it wasn't a typo. 7.059 and every 47 khz up and down.
Not sure what it could be but it's been there every night for years. Where is that "planned obsolescence when you need it?

73. VA3ZC


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Re: Evenly spaced RFI.

Paul Egan <paul@...>
 

Thanks for the info, but it wasn't a typo. 7.059 and every 47 khz up and down.
Not sure what it could be but it's been there every night for years. Where is that "planned obsolescence when you need it?

73. VA3ZC


Re: Signal history logging interval

Simon Brown
 

All,

 

This kit is only for Ken to check the Signal History feature – I’ll update the V3.1 Beta downloads tomorrow.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 19 January 2022 14:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Signal history logging interval

 

Hi,

 

Added the Period dropdown.

 

 

32-Bit

https://www.dropbox.com/s/k37dcw0bns7v35d/SDR-Radio%20V3.1%2C%2032-bit%2C%202022-01-19_1421.exe?dl=0

 

64-Bit

https://www.dropbox.com/s/r9pkzpoawvyv3kf/SDR-Radio%20V3.1%2C%2064-bit%2C%202022-01-19_1412.exe?dl=0

 

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 19 January 2022 12:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Signal history logging interval

 

That's great news. Thanks so much for considering my suggestion. I'm sure I won't be the only one who will find this modification useful. Thanks again Simon.

 

Ken -- WBOCV

 

 

On Jan 19, 2022 03:02, Simon Brown <simon@...> wrote:

Ken,

 

Today I’m adding the option to export with a user-selectable period, for example one value every 250ms, 500ms, … 10s.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 19:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Signal history logging interval

 

Is there any was to adjust the logging interval in the ‘Signal History’ recorder accessible in the ‘View’ panel?  I find it to be a very useful feature to track signal levels.  However, it defaults to a logging interval of 50 milliseconds.  While that’s useful for short-term monitoring of a signal, it results in some large files if you want to do some long-term monitoring, such as looking for sunrise/sunset effects, monitoring of Sudden Ionospheric Disturbances (SIDs), etc.  With a sample interval of 50 ms, a 12-hour log will end up having 864,000 records.  That’s approaching the upper limit for the number of rows an Excel file can handle.  It would be useful to be able to specify the desired sampling interval to cut down on the number of samples logged over a longer time period.

 

If anyone can point me in the right direction to change the sampling interval, I’d greatly appreciate it.  If it’s not possible with the current version(s) of SDRC, are there enough other people interested in such a feature to justify incorporation of such an option in a future revision of SDRC?

 

Thanks in advance.  I hope everyone has a great weekend.

 

Ken  --  WBØOCV

 


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Re: Signal history logging interval

Simon Brown
 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 19 January 2022 12:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Signal history logging interval

 

That's great news. Thanks so much for considering my suggestion. I'm sure I won't be the only one who will find this modification useful. Thanks again Simon.

 

Ken -- WBOCV

 

 

On Jan 19, 2022 03:02, Simon Brown <simon@...> wrote:

Ken,

 

Today I’m adding the option to export with a user-selectable period, for example one value every 250ms, 500ms, … 10s.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 19:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Signal history logging interval

 

Is there any was to adjust the logging interval in the ‘Signal History’ recorder accessible in the ‘View’ panel?  I find it to be a very useful feature to track signal levels.  However, it defaults to a logging interval of 50 milliseconds.  While that’s useful for short-term monitoring of a signal, it results in some large files if you want to do some long-term monitoring, such as looking for sunrise/sunset effects, monitoring of Sudden Ionospheric Disturbances (SIDs), etc.  With a sample interval of 50 ms, a 12-hour log will end up having 864,000 records.  That’s approaching the upper limit for the number of rows an Excel file can handle.  It would be useful to be able to specify the desired sampling interval to cut down on the number of samples logged over a longer time period.

 

If anyone can point me in the right direction to change the sampling interval, I’d greatly appreciate it.  If it’s not possible with the current version(s) of SDRC, are there enough other people interested in such a feature to justify incorporation of such an option in a future revision of SDRC?

 

Thanks in advance.  I hope everyone has a great weekend.

 

Ken  --  WBØOCV

 


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Re: Signal history logging interval

Simon Brown
 

I’ll send you a link to a kit by direct mail.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 19 January 2022 12:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Signal history logging interval

 

That's great news. Thanks so much for considering my suggestion. I'm sure I won't be the only one who will find this modification useful. Thanks again Simon.

 

Ken -- WBOCV

 

 

On Jan 19, 2022 03:02, Simon Brown <simon@...> wrote:

Ken,

 

Today I’m adding the option to export with a user-selectable period, for example one value every 250ms, 500ms, … 10s.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 19:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Signal history logging interval

 

Is there any was to adjust the logging interval in the ‘Signal History’ recorder accessible in the ‘View’ panel?  I find it to be a very useful feature to track signal levels.  However, it defaults to a logging interval of 50 milliseconds.  While that’s useful for short-term monitoring of a signal, it results in some large files if you want to do some long-term monitoring, such as looking for sunrise/sunset effects, monitoring of Sudden Ionospheric Disturbances (SIDs), etc.  With a sample interval of 50 ms, a 12-hour log will end up having 864,000 records.  That’s approaching the upper limit for the number of rows an Excel file can handle.  It would be useful to be able to specify the desired sampling interval to cut down on the number of samples logged over a longer time period.

 

If anyone can point me in the right direction to change the sampling interval, I’d greatly appreciate it.  If it’s not possible with the current version(s) of SDRC, are there enough other people interested in such a feature to justify incorporation of such an option in a future revision of SDRC?

 

Thanks in advance.  I hope everyone has a great weekend.

 

Ken  --  WBØOCV

 


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Re: Signal history logging interval

Ken Sejkora
 

That's great news. Thanks so much for considering my suggestion. I'm sure I won't be the only one who will find this modification useful. Thanks again Simon.

Ken -- WB∅OCV


On Jan 19, 2022 03:02, Simon Brown <simon@...> wrote:

Ken,

 

Today I’m adding the option to export with a user-selectable period, for example one value every 250ms, 500ms, … 10s.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 19:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Signal history logging interval

 

Is there any was to adjust the logging interval in the ‘Signal History’ recorder accessible in the ‘View’ panel?  I find it to be a very useful feature to track signal levels.  However, it defaults to a logging interval of 50 milliseconds.  While that’s useful for short-term monitoring of a signal, it results in some large files if you want to do some long-term monitoring, such as looking for sunrise/sunset effects, monitoring of Sudden Ionospheric Disturbances (SIDs), etc.  With a sample interval of 50 ms, a 12-hour log will end up having 864,000 records.  That’s approaching the upper limit for the number of rows an Excel file can handle.  It would be useful to be able to specify the desired sampling interval to cut down on the number of samples logged over a longer time period.

 

If anyone can point me in the right direction to change the sampling interval, I’d greatly appreciate it.  If it’s not possible with the current version(s) of SDRC, are there enough other people interested in such a feature to justify incorporation of such an option in a future revision of SDRC?

 

Thanks in advance.  I hope everyone has a great weekend.

 

Ken  --  WBØOCV

 


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Re: Signal history logging interval

Simon Brown
 

Ken,

 

Today I’m adding the option to export with a user-selectable period, for example one value every 250ms, 500ms, … 10s.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 19:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Signal history logging interval

 

Is there any was to adjust the logging interval in the ‘Signal History’ recorder accessible in the ‘View’ panel?  I find it to be a very useful feature to track signal levels.  However, it defaults to a logging interval of 50 milliseconds.  While that’s useful for short-term monitoring of a signal, it results in some large files if you want to do some long-term monitoring, such as looking for sunrise/sunset effects, monitoring of Sudden Ionospheric Disturbances (SIDs), etc.  With a sample interval of 50 ms, a 12-hour log will end up having 864,000 records.  That’s approaching the upper limit for the number of rows an Excel file can handle.  It would be useful to be able to specify the desired sampling interval to cut down on the number of samples logged over a longer time period.

 

If anyone can point me in the right direction to change the sampling interval, I’d greatly appreciate it.  If it’s not possible with the current version(s) of SDRC, are there enough other people interested in such a feature to justify incorporation of such an option in a future revision of SDRC?

 

Thanks in advance.  I hope everyone has a great weekend.

 

Ken  --  WBØOCV

 


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Re: Evenly spaced RFI.

jdow
 

7.059 MHz? Or might that be a typo on 7.159 MHz. That would be the second harmonic of the old NTSC color subcarrier which more or less lives on with the ATSC 59.94 Hz frame rate and its harmonics etc. It could, in principle, be a very old TV monitor on an old computer such as a Commodore PET at 7.159 MHz.

{^_^}

On 20220118 18:29:30, Paul Egan wrote:
I have a problem with RFI. It isn't in my condo and there is probably no real way of determining where it comes from but I'm curious if anyone recognizes this one. It is evenly spaced at 47 khz. and very noticeable between 6 and 8 Mhz. It is only present during the evening hours and is often gone late at night. I'm guessing it is a TV in a neighbouring unit. There is a particularly annoying node at 7.059 Mhz. It is roughly 6khz. wide.

The antenna is a magnetic loop on the balcony. Ironically I can null the noise but then lose the ability to get a decent swr as it is too close to the building.

I know I will have to live with / work around this noise but I was just curious if anyone can identify it for me.

Thanks and 73,
Paul VA3ZC


Evenly spaced RFI.

Paul Egan <paul@...>
 

I have a problem with RFI. It isn't in my condo and there is probably no real way of determining where it comes from but I'm curious if anyone recognizes this one. It is evenly spaced at 47 khz. and very noticeable between 6 and 8 Mhz. It is only present during the evening hours and is often gone late at night. I'm guessing it is a TV in a neighbouring unit. There is a particularly annoying node at 7.059 Mhz. It is roughly 6khz. wide.

The antenna is a magnetic loop on the balcony. Ironically I can null the noise but then lose the ability to get a decent swr as it is too close to the building.

I know I will have to live with / work around this noise but I was just curious if anyone can identify it for me.

Thanks and 73,
Paul VA3ZC


Re: My Life

Peter Maxu
 

thank you, it is working now.


Re: Pluto:: Spurious Emissions

Simon Brown
 

Hi,

 

Juts looks like one bug fixed but for some reason it no longer transmits at 2.1 MHz and above :( . May take some time to find this, annoying!

 

The bug I fixed – the TX FIR filter may not have been applied…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 17 January 2022 18:49
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

cant wait to have the next version to try :-)

dg9bfc sigi

Am 17.01.2022 um 14:13 schrieb Simon Brown:

And,

 

Fixed but I do see a couple of other issues to look at later today.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 10:30
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

Sigi,

 

There’s a bug in my code…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 17 January 2022 09:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

just made a quick and dirty test ... set rx to 10489.700 and let it there (switched of "sync")

then sent a tune tone 500 kc higher and 1000kc higher (nothing could be seen on transponder!!) the did the same downwards (yes i know i was txing outside band!!)

if there would be spurious signal plus minus 500 kc or 1000 kc i sure would have seen them (i was txing with 20w in a sixfooter!!)

so ... i think its a different thing he sees on his station ... the pluto is clean (normally)

so lets ask some questions ... any switcher used to power a predriver?? (switching psu frequency may mix up with the real frequency)

or is it possible that you used an external reference on your pluto that is not clean (that also may cause unwanted signals)

tx boost engaged??

no ... do not used it!! ... using higher power of the pluto sends out higher spurious signals so using tx boost does not clean up your signal

better use lower power setting (drive 80 to 90 maximum) and add an lna

dg9bfc sigi

Am 17.01.2022 um 08:39 schrieb Simon Brown:

So,

 

Looking at logfiles it may be that the TX FIR filter is not being applied, am now working on this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:53
To: main@SDR-Radio.groups.io; SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

So,

 

Sigi – any comments? I’m now looking at this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:51
To: SDR-Radio@groups.io
Subject: [SDR-Radio] Pluto:: Spurious Emissions

 

[Forwarded from direct e-mail]

 

The issue:

SDRconsole produces spurious transmissions with the Pluto, abt +/- 0.5MHz and +/- 1MHz, other softwares like the "Langstone Project" and the "AMSAT_DL QO-100 TRX" do not.

 

I love to use your software on the QO-100 and I will do so in the future, but I have to be aware of the fact that I violate the international rules for Amateur Radio Operators regarding allowed spurious transmissions.

 

All the best for the New Year and mni tnx for providing us SDRconsole for free!

 

73 de HB9DON, Lorenzo


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Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

cant wait to have the next version to try :-)

dg9bfc sigi

Am 17.01.2022 um 14:13 schrieb Simon Brown:

And,

 

Fixed but I do see a couple of other issues to look at later today.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 10:30
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

Sigi,

 

There’s a bug in my code…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 17 January 2022 09:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

just made a quick and dirty test ... set rx to 10489.700 and let it there (switched of "sync")

then sent a tune tone 500 kc higher and 1000kc higher (nothing could be seen on transponder!!) the did the same downwards (yes i know i was txing outside band!!)

if there would be spurious signal plus minus 500 kc or 1000 kc i sure would have seen them (i was txing with 20w in a sixfooter!!)

so ... i think its a different thing he sees on his station ... the pluto is clean (normally)

so lets ask some questions ... any switcher used to power a predriver?? (switching psu frequency may mix up with the real frequency)

or is it possible that you used an external reference on your pluto that is not clean (that also may cause unwanted signals)

tx boost engaged??

no ... do not used it!! ... using higher power of the pluto sends out higher spurious signals so using tx boost does not clean up your signal

better use lower power setting (drive 80 to 90 maximum) and add an lna

dg9bfc sigi

Am 17.01.2022 um 08:39 schrieb Simon Brown:

So,

 

Looking at logfiles it may be that the TX FIR filter is not being applied, am now working on this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:53
To: main@SDR-Radio.groups.io; SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

So,

 

Sigi – any comments? I’m now looking at this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:51
To: SDR-Radio@groups.io
Subject: [SDR-Radio] Pluto:: Spurious Emissions

 

[Forwarded from direct e-mail]

 

The issue:

SDRconsole produces spurious transmissions with the Pluto, abt +/- 0.5MHz and +/- 1MHz, other softwares like the "Langstone Project" and the "AMSAT_DL QO-100 TRX" do not.

 

I love to use your software on the QO-100 and I will do so in the future, but I have to be aware of the fact that I violate the international rules for Amateur Radio Operators regarding allowed spurious transmissions.

 

All the best for the New Year and mni tnx for providing us SDRconsole for free!

 

73 de HB9DON, Lorenzo


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Re: My Life

Simon Brown
 

Try now.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Peter Maxu
Sent: 17 January 2022 16:59
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] My Life

 

Hi Simon,

i tried to register to the forum.sdr-radio.com.

But i got no response to my email, also resend email did not help.

Can you please check it?

The reason i want to register to the forum is, that i want you to ask to add a maxim level hold function, i think that is very important option.

Thanks for your great program, bye!


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Re: My Life

Larry Dodd
 

Ha! Jolly good. 
Larry K4LED 

On Jan 17, 2022, at 10:34 AM, Simon Brown <simon@...> wrote:



 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


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Re: My Life

Peter Maxu
 

Hi Simon,

i tried to register to the forum.sdr-radio.com.

But i got no response to my email, also resend email did not help.

Can you please check it?

The reason i want to register to the forum is, that i want you to ask to add a maxim level hold function, i think that is very important option.

Thanks for your great program, bye!


My Life

Simon Brown
 

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


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Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

Hmm.. I see another small bug...after a bit of usage the tx buffers get a tiny bit mixed (audio is garbelled.. Sounds rough)
Stop start solves it
Dg9bfc sigi 


Am 17.01.2022 14:13 schrieb Simon Brown <simon@...>:

And,

 

Fixed but I do see a couple of other issues to look at later today.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 10:30
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

Sigi,

 

There’s a bug in my code…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 17 January 2022 09:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

just made a quick and dirty test ... set rx to 10489.700 and let it there (switched of "sync")

then sent a tune tone 500 kc higher and 1000kc higher (nothing could be seen on transponder!!) the did the same downwards (yes i know i was txing outside band!!)

if there would be spurious signal plus minus 500 kc or 1000 kc i sure would have seen them (i was txing with 20w in a sixfooter!!)

so ... i think its a different thing he sees on his station ... the pluto is clean (normally)

so lets ask some questions ... any switcher used to power a predriver?? (switching psu frequency may mix up with the real frequency)

or is it possible that you used an external reference on your pluto that is not clean (that also may cause unwanted signals)

tx boost engaged??

no ... do not used it!! ... using higher power of the pluto sends out higher spurious signals so using tx boost does not clean up your signal

better use lower power setting (drive 80 to 90 maximum) and add an lna

dg9bfc sigi

Am 17.01.2022 um 08:39 schrieb Simon Brown:

So,

 

Looking at logfiles it may be that the TX FIR filter is not being applied, am now working on this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:53
To: main@SDR-Radio.groups.io; SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

So,

 

Sigi – any comments? I’m now looking at this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:51
To: SDR-Radio@groups.io
Subject: [SDR-Radio] Pluto:: Spurious Emissions

 

[Forwarded from direct e-mail]

 

The issue:

SDRconsole produces spurious transmissions with the Pluto, abt +/- 0.5MHz and +/- 1MHz, other softwares like the "Langstone Project" and the "AMSAT_DL QO-100 TRX" do not.

 

I love to use your software on the QO-100 and I will do so in the future, but I have to be aware of the fact that I violate the international rules for Amateur Radio Operators regarding allowed spurious transmissions.

 

All the best for the New Year and mni tnx for providing us SDRconsole for free!

 

73 de HB9DON, Lorenzo


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Re: Pluto:: Spurious Emissions

Simon Brown
 

And,

 

Fixed but I do see a couple of other issues to look at later today.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 10:30
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

Sigi,

 

There’s a bug in my code…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 17 January 2022 09:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

just made a quick and dirty test ... set rx to 10489.700 and let it there (switched of "sync")

then sent a tune tone 500 kc higher and 1000kc higher (nothing could be seen on transponder!!) the did the same downwards (yes i know i was txing outside band!!)

if there would be spurious signal plus minus 500 kc or 1000 kc i sure would have seen them (i was txing with 20w in a sixfooter!!)

so ... i think its a different thing he sees on his station ... the pluto is clean (normally)

so lets ask some questions ... any switcher used to power a predriver?? (switching psu frequency may mix up with the real frequency)

or is it possible that you used an external reference on your pluto that is not clean (that also may cause unwanted signals)

tx boost engaged??

no ... do not used it!! ... using higher power of the pluto sends out higher spurious signals so using tx boost does not clean up your signal

better use lower power setting (drive 80 to 90 maximum) and add an lna

dg9bfc sigi

Am 17.01.2022 um 08:39 schrieb Simon Brown:

So,

 

Looking at logfiles it may be that the TX FIR filter is not being applied, am now working on this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:53
To: main@SDR-Radio.groups.io; SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

So,

 

Sigi – any comments? I’m now looking at this.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 17 January 2022 06:51
To: SDR-Radio@groups.io
Subject: [SDR-Radio] Pluto:: Spurious Emissions

 

[Forwarded from direct e-mail]

 

The issue:

SDRconsole produces spurious transmissions with the Pluto, abt +/- 0.5MHz and +/- 1MHz, other softwares like the "Langstone Project" and the "AMSAT_DL QO-100 TRX" do not.

 

I love to use your software on the QO-100 and I will do so in the future, but I have to be aware of the fact that I violate the international rules for Amateur Radio Operators regarding allowed spurious transmissions.

 

All the best for the New Year and mni tnx for providing us SDRconsole for free!

 

73 de HB9DON, Lorenzo


--

- + - + -

Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


--

- + - + -

Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


--

- + - + -

Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


--

- + - + -

Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Noise level variation AirSpy HF+

Kriss Kliegle KA1GJU
 

One final note, hit the square box in upper right to make it full screen. I didn't on the above image sent and the bottom ribbon bar is missing, most of which Simon needs to see when users are having issues.

73 Kriss KA1GJU


Re: Noise level variation AirSpy HF+

Kriss Kliegle KA1GJU
 

When sent as an attachment (use the paperclip above text box) the image will not get reduced to unreadable. Maybe email clients can read it? But 
I and others read it via the web GUI.
Here's an example that all the finer details can be read.

73 Kriss KA1GJU

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