Date   

Re: Progress with SdR console remote via internet- but slightly confused

Kriss Kliegle KA1GJU
 

SDRC Server is a one user per radio system, unlike Web SDR.
One server can host many SDR’s though. Upload bandwidth to your local ISP can be a limiting factor though.

73 Kriss KA1GJU 
Home of the Super Station SDRC Servers in NH, USA.


Re: Andrus SDR

Daniel Young
 

Hi Simon I successfully connected via the sdr server after increasing the  buffering in the section mentioning wifi and opening the udp port on windows firewall.
and router.
currently it works perfectly for one user via mobile broadband and a laptop, the only minor issue is cycling db gain button when first started- there after exceptional.

thank you for your efforts


Progress with SdR console remote via internet- but slightly confused

Daniel Young
 

Firstly NetSDR locally works great, needed to set dB gain in definitions higher and cycling dB button on SDR console- hours of pleasure listening.

With NetSDR and UDP port opening, I set buffering higher and hours of remote from home listening 👍

It seems using NetSDR protocol child processes locally will open so multiple frequencies.

If I try to allow 2 or 3 users via server application it shows  online- but busy after one connection

Is this a limitation of the hardware /protocol and SDR console server? Or am I making a configuration error somehow.

Really pleased with usability and performance so far.

Thanks


Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

jdow
 

And young enough he had the chance to learn software as a mother tongue.

{^_-}

On 20220206 10:27:31, Siegfried Jackstien wrote:

infected with ham radio with an age of just 48 hours ... that explains it .. grin

dg9bfc sigi

Am 06.02.2022 um 19:26 schrieb Simon Brown:

😊

I heard Sputnik. I was two days old in a maternity hospital, it was being played on the BBC Home service.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 06 February 2022 18:23
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

 

(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!

 

 


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Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

jdow
 

Yup, I earned every one of these gray hairs the hard way - by living long enough. (And by doing the opposite of what politicians told me to do? I met Willy Ley. I met a Gulag survivor. I had a professor with a number tatoo on the wrist. It's amazing what living long enough gives one in terms of raw experience. Um, I also met a man my mother dated well before I was born - the original radio Lone Ranger. Don't sell old folks short.)

{^_-}

On 20220206 10:26:15, Siegfried Jackstien wrote:

... hmmm thats a long time ago... you must be an old lady :-)

dg9bfc sigi

Am 06.02.2022 um 19:23 schrieb jdow:
(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:
Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:
Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!





Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

Simon Brown
 

I’ve actually got some RDS demodulation displays which only I can see – SDR Console and RDSSpy can actually decode a fraction below the theoretical threshold.

 

I am sure there’s work that could be done when the stereo signal overlaps the RDS but we’re very, very close to the optimum now.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 06 February 2022 18:20
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

 

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!

 


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


Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

Siegfried Jackstien
 

infected with ham radio with an age of just 48 hours ... that explains it .. grin

dg9bfc sigi

Am 06.02.2022 um 19:26 schrieb Simon Brown:

😊

I heard Sputnik. I was two days old in a maternity hospital, it was being played on the BBC Home service.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 06 February 2022 18:23
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

 

(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!

 

 


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


Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

Siegfried Jackstien
 

... hmmm thats a long time ago... you must be an old lady :-)

dg9bfc sigi

Am 06.02.2022 um 19:23 schrieb jdow:

(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:
Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:
Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!




Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

Simon Brown
 

😊

I heard Sputnik. I was two days old in a maternity hospital, it was being played on the BBC Home service.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 06 February 2022 18:23
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

 

(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!

 

 


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


Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

jdow
 

(And for the record, I did hear Sputnik on the school's radio club radio.)
{o.o}

On 20220206 10:19:42, jdow wrote:

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:
Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!




Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

jdow
 

Please - it's ALL Simon, really. He is the guilty party in this endeavor. I'm just an over educated gadfly on the sidelines. And, indeed, SDRC is so fantastic it's hard to believe looking at it from a "first licensed in 1959" vantage point.

{^_^}

On 20220206 01:50:00, h. garcia wrote:

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I've haven't checked if we have more recent topics on the WFM MPX demodulador and the RDS modem.

Anyways, just wanted to share how impressed I'm with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx. 

Like you described before, if one checks the MPX spectrum, very often the RDS carrier is obliterated by the audio peaks. BER indicator (RDS Spy shows it) improves a lot during soft music ou pauses/silences. 

Nevertheless, the Si47xx seems to cope way better these scenarios. I've got a station where the DT-800 shows the station name in no more than 10-15s. Over the PC, sometimes it takes 2 min to show up.

I've been checking the Si47xx documentation and they includes some very clever DSP techniques to condition the RF signal and MPX output. For instance, the IC is aware of selective fading and tries to handle that. 

Unsure how this helps the group, hi! Just wanted to share Si47xx seems a really nice piece of FM and RDS and its documentation, despite not revealing how it's done, shows all real life constraints the IC designers had to overcome.

Cheers!



Re: #sdrplay RSPdx & HDR mode #sdrplay

Simon Brown
 

Yes it does.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Paul N via groups.io
Sent: 06 February 2022 16:22
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] #sdrplay RSPdx & HDR mode

 

Hi
Please pardon the question, but does the HDR mode work in SDRConsole?
I ask because in SDRuno it only works in the framed bands.
Regards
Paul


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#sdrplay RSPdx & HDR mode #sdrplay

Paul N
 

Hi
Please pardon the question, but does the HDR mode work in SDRConsole?
I ask because in SDRuno it only works in the framed bands.
Regards
Paul


Re: Bricked my Ettus X310

Erik. M0MWF
 

Hello again - as for daughterboards, I have number of them, as I also have an N200 too.
List goes: UBX160, UBX40, CBX40 (two of), LFTX, LFRX.

I travel with my x310, and keep the UBX160, and LFTX & LFRX installed 90% of the time.


Re: Keyboard shortcut for voice keyer

Max
 

On Sun, Feb 6, 2022 at 07:24 AM, Simon Brown wrote:

Sometimes this is very difficult or causes conflicts.

 

Use a MIDI device for the Voice Keyer.

Good shout. Had not realised this was mapped Simon.

Max


Re: Troposcatter with RDS. Comparing RDS Spy with SDR Console native RDS decoder

h. garcia <pu3hag.l@...>
 
Edited

Hey Simon, JDow -- very good morning to you and everyone in the reflector.

I've been reading the exchanges in this thread and I found it fascinating! Thank you so much!

To be honest, I haven't checked if we have more recent topics on the WFM MPX demodulator and the RDS modem.

Anyways, just wanted to share how impressed I am with the RDS decoder available in small radios like Sangean DT-800 or XHData D-808 leveraged by Skyworks (former SiLabs) ICs Si47xx-series. 

Like you described before, if one checks the MPX spectrum, most stations seem to leave their RDS carrier to be obliterated by during audio peaks. BER indicator (from RDS Spy) clearly improves during soft music and pauses/silences. 

Nevertheless, the Si47xx seems to cope way better in these scenarios where the RDS SNR fluctuates a lot. One of the FM stations nearby will show up its PS+RT in no more than 15s on the Sangean DT-800, but may take 2x or 3x longer on PC+SDR.

(Admittedly, the PC-SDR combination I'm using here is far from ideal, it's just the AirSpy R2 or HF+ and a telescopic antenna),

The Si47xx documentation seemed to me very cool. Despite not revealing how it's done, shows interesting tricks IC designers included. The RDS decoder seems to benefit by the Channel Equalizer (mitigates selective fading and phase shifting), "Hi-Cut of the L+R" when RSSI is low, and "strong synchronization" and "advanced decoding and statistical decision"

https://www.skyworksinc.com/-/media/Skyworks/SL/documents/public/data-sheets/Si4770-77-A20.pdf

Well, this was just my 0.0000000002 to call out Si47xx seems a really nice piece of FM and RDS demod; it's documentation may provide insights for coming iterations or experimenters on FM MPX output and RDS decoder chain.

Cheers!

pu3hag huelbe


Re: Keyboard shortcut for voice keyer

Simon Brown
 

Sometimes this is very difficult or causes conflicts.

 

Use a MIDI device for the Voice Keyer.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Max
Sent: 06 February 2022 00:22
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Keyboard shortcut for voice keyer

 

On Sat, Feb 5, 2022 at 10:34 PM, <cedric@...> wrote:

I found the screen where keyboard short cuts can be set, but I don't find the voice keyer in the list. Can I use F1 to F4 for the voice messages 1 to 4?

Could be wrong, but as far as I know it's only possible to assigned keyboard shortcuts to items which appear in the top of screen "tabbed" menus (Home, View, Receive, Transmit etc) in the top ribbon bar. Even then some of those do not work. It's an area I think Simon has said he will come back to (hopefully).

I am like you. I would like any button visible on the screen on any panel to be assignable to a keyboard shortcut, but I don't think that this is high on Simon's list of priorities, if at all.

So unfortunately the answer is almost certainly "no" sadly, unless I missed something.

73

Max


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Re: Pluto:: Spurious Emissions

Simon Brown
 

FWIW,

 

There is a FIR Filter loaded into the Pluto chip when it is started. If there is too much filter gain then the transmit quality can suffer, I did have an option to boost gain and this caused a bad signal, this option has been removed.

 

Your input re: clock is interesting – my main Pluto uses an external reference (thanks to Matthias who did the mod), I have a Leo Bodnar unit.

 

There are many, many parameters which can be set to adjust the Pluto, if anyone does some reading of the AD9363 datasheet here and/or is in another group where AD9363/AD9364 parameters are used to adjust the output quality then just post here.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Julian Bone via groups.io
Sent: 05 February 2022 18:50
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

 

The Libre Space Foundation produced a document entitled 'Evaluation of SDR Boards and Toolchains' which can be found easily online.
The Pluto comes out well considering its price, very clean actually.
I think the concern was over Amateurs possibly interfering with the ISS and satellites if SDR platforms were of poor quality.
My experience of the Pluto, is that it is very sensitive to clock issues like jitter, producing lots of spurii with a poor clock.
Spurii frequency changing with clock amplitude.
The new version of Pluto has a clock reference buffer which should help to eliminate these issues.
These points may have nothing to do with this string but I felt might be of interest.  


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Re: Virtual Here And Local Network

Dominic Dambro
 

Thanks, MIke. Everything operates inside the 10.0.0.1-254 range, regardless of wired or wireless. The modem is doing the routing- it's not in bridge mode; the APs are simply pushing out the wifi.
Another PC in the house (wireless) has the same problem- I can search V3 Server in definitions and see "Dominic's Test Station," but I cannot connect- it just times out after 5 seconds. The wired PCs are fine and wireless laptop outside the network is fine.
I have no obvious rules or restrictions set up in the Unifi portal, but I'll keep looking. It's only frustrating in regard to the RSPdx. I can utilize the Afedri just fine, as it's connected directly to my router, so SDR Console can use it locally.


Re: Pluto:: Spurious Emissions

jdow
 

Ba-da-bing as they say in the vernacular.
{o.o}

(Besides, EVERYTHING is "just physics". So it was sort of a null statement. OTOH, in general lowering levels keeps you out of the non-linear regions or D/A overload or other nasties.)

On 20220205 14:57:05, Boudewijn (Bob) Tenty VE3TOK wrote:

The attenuation happens before the final in the Pluto NOT after it, see  https://wiki.analog.com/university/tools/pluto/users/transmit

Bob VE3TOK

On 2022-02-05 16:11, Jean (DJ0VL) wrote:
Please enlighten me: which plain pure old fashioned physics does reduce the spurious level (in dBc, not dBm) of a constant signal that is reduced by adding attenuation?

73 Jean DJ0VL
-- 
There is nothing permanent except change
 
-Heraclitus

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