Date   

Re: Fixed Spectrum Width in waterfall

Simon Brown
 

Conrad,

 

Select No action here.

 

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y
Sent: 05 January 2022 12:36
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Fixed Spectrum Width in waterfall

 

Ooops and ladies of course.

 

Conrad

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y via groups.io
Sent: 05 January 2022 13:36
To: main@sdr-radio.groups.io
Subject: [SDR-Radio] Fixed Spectrum Width in waterfall

 

Hello Gentlemen and happy new year.

 

I use SDR console with a transverter and Perseus as a band scope with point and click tuning. I did search the archives for what has previously  been referred to as ‘Fixed Spectrum Mode’ which I think is what I want.

 

Maybe it would be best if I explain the scenario.

 

I want the Waterfall to always display between 144.080 and 144.400 and for this to be fixed. This would be optimal use with the DXSpots markers during a contest. When I click I do not want the waterfall display to move just the receive frequency. I am sure that this must be possible but I cannot find it. I am sorry for being so dumb!

 

Say I click on 144.185 I do not require this to be centred in the main waterfall, it should stay static at a fixed bandwidth. I hope that my explanation is clear.

 

I thought that I may be able to do this by setting the width of the horizontal slider at the bottom of the screen but I cannot fix it to specific lower and upper limits. I want to view around 450kHz and I am sampling with adequate BW on the Perseus. It seems to have been requested but I do not know if it has been implemented yet. If it has I missed it and cannot find out how to achieve it.

 

Regards

 

Conrad PA5Y

 

 

 


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Re: Fixed Spectrum Width in waterfall

Conrad, PA5Y
 

Ooops and ladies of course.

 

Conrad

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y via groups.io
Sent: 05 January 2022 13:36
To: main@sdr-radio.groups.io
Subject: [SDR-Radio] Fixed Spectrum Width in waterfall

 

Hello Gentlemen and happy new year.

 

I use SDR console with a transverter and Perseus as a band scope with point and click tuning. I did search the archives for what has previously  been referred to as ‘Fixed Spectrum Mode’ which I think is what I want.

 

Maybe it would be best if I explain the scenario.

 

I want the Waterfall to always display between 144.080 and 144.400 and for this to be fixed. This would be optimal use with the DXSpots markers during a contest. When I click I do not want the waterfall display to move just the receive frequency. I am sure that this must be possible but I cannot find it. I am sorry for being so dumb!

 

Say I click on 144.185 I do not require this to be centred in the main waterfall, it should stay static at a fixed bandwidth. I hope that my explanation is clear.

 

I thought that I may be able to do this by setting the width of the horizontal slider at the bottom of the screen but I cannot fix it to specific lower and upper limits. I want to view around 450kHz and I am sampling with adequate BW on the Perseus. It seems to have been requested but I do not know if it has been implemented yet. If it has I missed it and cannot find out how to achieve it.

 

Regards

 

Conrad PA5Y

 

 

 


Fixed Spectrum Width in waterfall

Conrad, PA5Y
 

Hello Gentlemen and happy new year.

 

I use SDR console with a transverter and Perseus as a band scope with point and click tuning. I did search the archives for what has previously  been referred to as ‘Fixed Spectrum Mode’ which I think is what I want.

 

Maybe it would be best if I explain the scenario.

 

I want the Waterfall to always display between 144.080 and 144.400 and for this to be fixed. This would be optimal use with the DXSpots markers during a contest. When I click I do not want the waterfall display to move just the receive frequency. I am sure that this must be possible but I cannot find it. I am sorry for being so dumb!

 

Say I click on 144.185 I do not require this to be centred in the main waterfall, it should stay static at a fixed bandwidth. I hope that my explanation is clear.

 

I thought that I may be able to do this by setting the width of the horizontal slider at the bottom of the screen but I cannot fix it to specific lower and upper limits. I want to view around 450kHz and I am sampling with adequate BW on the Perseus. It seems to have been requested but I do not know if it has been implemented yet. If it has I missed it and cannot find out how to achieve it.

 

Regards

 

Conrad PA5Y

 

 

 


Re: Very basic question, sorry

David J Taylor
 

On 05/01/2022 11:21, michel soldevila wrote:
Hi group,
The receiver bandwidth is set to 1MHz in SDR Console. I wonder why the "useful"
bandwidth seen in the waterfall display is only about 750 kHz ...
Michel, F1GOC
Michel,

Welcome to the group!

It's undesirable to have very sharp filters, as they can introduce ringing and
distort the signals being passed. Hence it's usually better to restrict the
bandwidth by smooth filters rather than ones with sharp edges. Hence the
difference. I'm sure others will give more reasons too.

Simon may have an option to allow sharp filters, so that you can investigate
the effects yourself. What radio are you using?

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv


Very basic question, sorry

michel soldevila
 

Hi group,
The receiver bandwidth is set to 1MHz in SDR Console. I wonder why the "useful" bandwidth seen in the waterfall display is only about 750 kHz ...
Michel, F1GOC


Re: Dependency on Intel DLLs

Simon Brown
 

OpenCL is optionally used by Console, maybe that’s why.

 

There’s no need for Console to run on a FPGA – it needs some CPU and DirectX graphics. Things like the Intel 12th / 13th / 14th generation run programs like Console / SDR# etc. with ease. Console (and SDR#) is a very, very efficiently coded program.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Gisle Vanem
Sent: 03 January 2022 10:19
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Dependency on Intel DLLs

 

I recently installed the Intel oneAPI with it's compiler etc. And a bunch of extra directories needed for PATH etc.

So now, running the latest SDR Console.exe beta-version, I noted via Process Explorer that some of these Intel .DLL files gets loaded into the SDR Console.exe process:

Process Explorer

How does this happen?

AFAICS, none of Simon's .DLLs/.EXEs loads these explicitly. So perhaps my Intel graphics driver of something else are loading these .DLLs dynamically?

Not at big problem. I'm just curious of what they do. Especially the AlteraCl.dll lib; SDR Console running on a FPGA. That'll be the day.


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Bitmap Display: How to change receiving frequency

Nils Schiffhauer
 

Hi, all - I just found an easy way to change the receiving frequency with the "Bitmap Display" is still kept open.
It works with the "Frequency Database", and it works just fine.
I added this procedure to my blog entry with two explaining screenshots:

https://dk8ok.org/2022/01/02/sdrc-new-bitmap-display-helps-to-raise-dx/

73 Nils, DK8OK

--
dk8ok.org


Dependency on Intel DLLs

Gisle Vanem
 

I recently installed the Intel oneAPI with it's compiler etc. And a bunch of extra directories needed for PATH etc.

So now, running the latest SDR Console.exe beta-version, I noted via Process Explorer that some of these Intel .DLL files gets loaded into the SDR Console.exe process:

Process Explorer

How does this happen?

AFAICS, none of Simon's .DLLs/.EXEs loads these explicitly. So perhaps my Intel graphics driver of something else are loading these .DLLs dynamically?

Not at big problem. I'm just curious of what they do. Especially the AlteraCl.dll lib; SDR Console running on a FPGA. That'll be the day.


Re: SDRC Bitmap Display - short intro

Alistair - M5ASF
 

This looks really useful, not just for HF propogation analysis, but also activity monitoring at higher frequencies.

Thanks to Simon for yet another addition to the all ready excellent SDRC and to Nils for the heads up.

HNY - Alistair (M5ASF)
 


Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

David J Taylor
 

On 02/01/2022 17:44, Simon Brown wrote:
One thing,

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

Simon Brown, G4ELI
https://www.sdr-radio.com
I'm 73 now, and still writing code. I half-retired some time back, and can now
concentrate on the bits which interest me, or the very few serious issues with
my own software. Fortunately the weather satellites my software supports are
gradually retiring, and there are others supporting the newer satellites
(although not needing to use that as a means of living, as I did, but being
supported by a "day job").

I do try and help others, but have little patience with those who ask the same
questions again and again, and don't appear either to search for or to read the
material to which they have been pointed. Mind you, I probably appear to do
the same when Linux is mentioned - but fortunately using the Raspberry Pi
extensively has ameliorated that to a degree!

Hitting the wrong keys is now starting to be an issue.

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv


Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Tom Crosbie G6PZZ
 

I like to think I still have a streak of youth about me but I was brought down to Earth sharply last year when my first State Pension payment hit my bank account.

Tom G6PZZ

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Max
Sent: 02 January 2022 21:59
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

 

On Sun, Jan 2, 2022 at 05:44 PM, Simon Brown wrote:

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

I'm not far behind you Simon, but difference is that my small brain does not even have the slightest insight into how you would begin writing the code (or any code) to produce something like SDR Console so hats off to you and very huge thanks for all the work to produce the best performing and most user-friendly SDR software on the planet. When I see (and try - very briefly - I'm not a masochist) what other SDR programs people battle to use I just don't fathom why they insist on making life so difficult for themselves when they could just load up SDRC and be on air immediately with very little drama, so well done and heartfelt thanks for what you do for those of us that could never get anywhere close from their own efforts.

What you do will always be a total mystery to me but long may you continue doing it!

Happy New Year and 73

Max


Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Max
 

On Sun, Jan 2, 2022 at 05:44 PM, Simon Brown wrote:
I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.
I'm not far behind you Simon, but difference is that my small brain does not even have the slightest insight into how you would begin writing the code (or any code) to produce something like SDR Console so hats off to you and very huge thanks for all the work to produce the best performing and most user-friendly SDR software on the planet. When I see (and try - very briefly - I'm not a masochist) what other SDR programs people battle to use I just don't fathom why they insist on making life so difficult for themselves when they could just load up SDRC and be on air immediately with very little drama, so well done and heartfelt thanks for what you do for those of us that could never get anywhere close from their own efforts.

What you do will always be a total mystery to me but long may you continue doing it!

Happy New Year and 73

Max


Re: NDB - Airspy HF+ DIscovery versus Hermes Lite 2

Max
 

On Sun, Jan 2, 2022 at 01:58 PM, sm6fhz wrote:
Hi Max.
This is what SAQ sounded like at my QTH.
Thanks for that Ingolf. Very nice recording. I guess not surprising that at just 43 km you can hear the alternator even when it is not being keyed!

73

Max


Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

jdow
 

Curtsies in your general direction slightly elder one. Getting old is not for the faint of heart, er pun intended?

{^_-}

On 20220102 10:31:02, Jerry Lofstead W3CDE wrote:

cONGRATS ON 65  I just turned 81 and am looking for 94 per the life tables 8-)

Jerry
W3CDE

On Sun, Jan 2, 2022 at 12:44 PM Simon Brown <simon@...> wrote:
One thing,

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: SDR-Radio-TestTeam@groups.io <SDR-Radio-TestTeam@groups.io> On Behalf Of Nils Schiffhauer
Sent: 02 January 2022 17:37
To: SDR-Radio-TestTeam@groups.io; main@SDR-Radio.groups.io
Subject: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Hi, all - thanks to Simon for another year having pushed the limits of SDRs and DXing forward and forward!
His "Bitmap Display" surprised me that I needed a moment to get a grip of it and its possible applications.
See the results on my website. With some screenshots, this entry is also meant to work as a quick starter:
https://dk8ok.org/2022/01/02/sdrc-new-bitmap-display-helps-to-raise-dx/

Happy New Year to all and 73: Nils, DK8OK

--
dk8ok.org









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Re: Happy New Year

jdow
 

Hm, maybe I can convert the rtlsdr source I have to handle extio files. That might keep me off the street a few days. OTOH it would be a more fun challenge to skip the extra dll and include that code into a sourcexxx.dll. Then you'll be able to Simonize (ouch) work I kludge into something in your style and more trouble free.

{o.o}

On 20220102 10:29:21, Simon Brown wrote:

I see that it would be nice to play with but is not very practical and requires a lot of effort from me. There’s no API for the RX888, just raw ADC data and ‘good luck to the programmer’.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 02 January 2022 18:04
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Oh poo.
{o.o}

On 20220102 09:44:53, Simon Brown wrote:

A few hours is a few days. Adding serial number support is straightforward, I have no plans to add the 64 MHz bandwidth.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 02 January 2022 17:08
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Please somewhere in there squeeze in a few hours to put together the new RX888 knowledge to make it more useful within SDRC.

{o.o}


On 20220102 08:37:39, Simon Brown wrote:

Agreed about the training. I hope to have the AI included by Easter, then I can dig further. Still a lot to do to get a nice UI harness working.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 02 January 2022 16:31
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Tensorflow is an excellent system for this sort of thing.  The author of that article used random words to train the model, but if he used more traditional ham conversations it would help a lot, at least for amatuer use including typical abbreviations and Q signs so they would be better represented and not read as errors by the model.  The other thing that would be useful would be to send a bunch of  known CW text from an automated keyer and pick up the audio from a remote SDR, so the model would include fading and other non-linear impairments that come from real HF paths that hams deal with all the time.  The cherry on top would be to have hams send a set of known text with keyer, bug or straight key and capture that over the HF signal path as well.  

 

If the ML model is trained well, I would not be at all surprised if it could decode CW much better than the best human.  I have been surprised as to how amazing the pattern recognition capabilities of well trained models are.  The key is all in the training.  

 

Good luck,

Milo (K6CZ)

 

 

 

On Sat, Jan 1, 2022 at 1:14 PM Simon Brown <simon@...> wrote:

Milo,

 

And excellent article – something I want to understand this year.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 01 January 2022 20:22
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

There are a huge number of new tools for using AI today that leverage modern compute infrastructure.  Unfortunately, many of the public ML tools out there are optimized for visual image processing, as opposed to audio or RF SIGINT style uses.  But a number of efforts exist to convert audio or RF to an image, and then use the image tools to do the training and generate a model for decoding.  While the training is computationally expensive, once the model is built, it can be pretty efficient to run.  

 

Here is one that is aimed at the cw decoding problem specifically that outlines use of some common AI tools: http://ag1le.blogspot.com/2019/02/training-computer-to-listen-and-decode.html

 

There was another one that used ML,  GIMP and RTL-SDR's to do signal identification using images again, but I can't seem to find it now.  

 

Good luck,

milo (K6CZ)

 

On Sat, Jan 1, 2022 at 9:55 AM Simon Brown <simon@...> wrote:

Well,

 

This actually will be a step into AI in 2023 – 1988 / 1989 I was working in AI at SWIFT, sadly the brains of the operation was on the plane that crashed at Lockerbie. 30+ years later it’s time to try and remember the theory and see how it’s changed.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 17:33
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon

You will do a great job. Solving the unsteady CW hand issue will be interesting. Even some machine produced CW will be a challenge to decode. Looking forward to your work on it in a few months from now. Computers are amazing but programmers even more amazing. Ha!

Larry K4LED 

 

On Jan 1, 2022, at 11:35 AM, Simon Brown <simon@...> wrote:



Hi,

 

I’ve often said that a computer can decode better than the human brain, now I’m trying to prove it. ‘I may be some time…’

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 15:13
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon. All,

Happy 2022 to all. May good SDR things happen this year. Good luck Simon on the CW decoder. It’s much needed. 

Larry K4LED 

 

On Jan 1, 2022, at 9:02 AM, Simon Brown <simon@...> wrote:



Hi All,

 

Over here it’s 2022 so a very happy new year to you all. I’ve updated the current V3.1 beta and am now spending January designing a CW Decoder harness which I hope will help me develop a good CW Decoder, so for January and possibly February you’ll not be hearing much from me 😊 .

 

Be good in 2022,

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


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Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Simon Brown
 

Ah,

 

But I’m hoping to be on top of my game until I’m 70 – very few guys writing serious code at that age. Long term I’ll be happy to bat along until I’m 75, then retire to Spain (maybe sooner).

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jerry Lofstead W3CDE
Sent: 02 January 2022 18:31
To: main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

 

cONGRATS ON 65  I just turned 81 and am looking for 94 per the life tables 8-)

 

Jerry

W3CDE

 

On Sun, Jan 2, 2022 at 12:44 PM Simon Brown <simon@...> wrote:

One thing,

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: SDR-Radio-TestTeam@groups.io <SDR-Radio-TestTeam@groups.io> On Behalf Of Nils Schiffhauer
Sent: 02 January 2022 17:37
To: SDR-Radio-TestTeam@groups.io; main@SDR-Radio.groups.io
Subject: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Hi, all - thanks to Simon for another year having pushed the limits of SDRs and DXing forward and forward!
His "Bitmap Display" surprised me that I needed a moment to get a grip of it and its possible applications.
See the results on my website. With some screenshots, this entry is also meant to work as a quick starter:
https://dk8ok.org/2022/01/02/sdrc-new-bitmap-display-helps-to-raise-dx/

Happy New Year to all and 73: Nils, DK8OK

--
dk8ok.org









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





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Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Jerry Lofstead W3CDE
 

cONGRATS ON 65  I just turned 81 and am looking for 94 per the life tables 8-)

Jerry
W3CDE

On Sun, Jan 2, 2022 at 12:44 PM Simon Brown <simon@...> wrote:
One thing,

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: SDR-Radio-TestTeam@groups.io <SDR-Radio-TestTeam@groups.io> On Behalf Of Nils Schiffhauer
Sent: 02 January 2022 17:37
To: SDR-Radio-TestTeam@groups.io; main@SDR-Radio.groups.io
Subject: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Hi, all - thanks to Simon for another year having pushed the limits of SDRs and DXing forward and forward!
His "Bitmap Display" surprised me that I needed a moment to get a grip of it and its possible applications.
See the results on my website. With some screenshots, this entry is also meant to work as a quick starter:
https://dk8ok.org/2022/01/02/sdrc-new-bitmap-display-helps-to-raise-dx/

Happy New Year to all and 73: Nils, DK8OK

--
dk8ok.org









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Re: Happy New Year

Simon Brown
 

I see that it would be nice to play with but is not very practical and requires a lot of effort from me. There’s no API for the RX888, just raw ADC data and ‘good luck to the programmer’.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 02 January 2022 18:04
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Oh poo.
{o.o}

On 20220102 09:44:53, Simon Brown wrote:

A few hours is a few days. Adding serial number support is straightforward, I have no plans to add the 64 MHz bandwidth.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 02 January 2022 17:08
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Please somewhere in there squeeze in a few hours to put together the new RX888 knowledge to make it more useful within SDRC.

{o.o}


On 20220102 08:37:39, Simon Brown wrote:

Agreed about the training. I hope to have the AI included by Easter, then I can dig further. Still a lot to do to get a nice UI harness working.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 02 January 2022 16:31
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Tensorflow is an excellent system for this sort of thing.  The author of that article used random words to train the model, but if he used more traditional ham conversations it would help a lot, at least for amatuer use including typical abbreviations and Q signs so they would be better represented and not read as errors by the model.  The other thing that would be useful would be to send a bunch of  known CW text from an automated keyer and pick up the audio from a remote SDR, so the model would include fading and other non-linear impairments that come from real HF paths that hams deal with all the time.  The cherry on top would be to have hams send a set of known text with keyer, bug or straight key and capture that over the HF signal path as well.  

 

If the ML model is trained well, I would not be at all surprised if it could decode CW much better than the best human.  I have been surprised as to how amazing the pattern recognition capabilities of well trained models are.  The key is all in the training.  

 

Good luck,

Milo (K6CZ)

 

 

 

On Sat, Jan 1, 2022 at 1:14 PM Simon Brown <simon@...> wrote:

Milo,

 

And excellent article – something I want to understand this year.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 01 January 2022 20:22
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

There are a huge number of new tools for using AI today that leverage modern compute infrastructure.  Unfortunately, many of the public ML tools out there are optimized for visual image processing, as opposed to audio or RF SIGINT style uses.  But a number of efforts exist to convert audio or RF to an image, and then use the image tools to do the training and generate a model for decoding.  While the training is computationally expensive, once the model is built, it can be pretty efficient to run.  

 

Here is one that is aimed at the cw decoding problem specifically that outlines use of some common AI tools: http://ag1le.blogspot.com/2019/02/training-computer-to-listen-and-decode.html

 

There was another one that used ML,  GIMP and RTL-SDR's to do signal identification using images again, but I can't seem to find it now.  

 

Good luck,

milo (K6CZ)

 

On Sat, Jan 1, 2022 at 9:55 AM Simon Brown <simon@...> wrote:

Well,

 

This actually will be a step into AI in 2023 – 1988 / 1989 I was working in AI at SWIFT, sadly the brains of the operation was on the plane that crashed at Lockerbie. 30+ years later it’s time to try and remember the theory and see how it’s changed.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 17:33
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon

You will do a great job. Solving the unsteady CW hand issue will be interesting. Even some machine produced CW will be a challenge to decode. Looking forward to your work on it in a few months from now. Computers are amazing but programmers even more amazing. Ha!

Larry K4LED 

 

On Jan 1, 2022, at 11:35 AM, Simon Brown <simon@...> wrote:



Hi,

 

I’ve often said that a computer can decode better than the human brain, now I’m trying to prove it. ‘I may be some time…’

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 15:13
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon. All,

Happy 2022 to all. May good SDR things happen this year. Good luck Simon on the CW decoder. It’s much needed. 

Larry K4LED 

 

On Jan 1, 2022, at 9:02 AM, Simon Brown <simon@...> wrote:



Hi All,

 

Over here it’s 2022 so a very happy new year to you all. I’ve updated the current V3.1 beta and am now spending January designing a CW Decoder harness which I hope will help me develop a good CW Decoder, so for January and possibly February you’ll not be hearing much from me 😊 .

 

Be good in 2022,

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


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Re: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Nils Schiffhauer
 

… with 66 now, I can say there is no rite de passage …
But for being as young as 65, your decision sounds already wise. Follow it!
Thanks & 73: Nils, DK8OK


Am 02.01.22 um 18:44 schrieb Simon Brown

One thing,

I'll be 65 this year so who knows how long I'll be writing code. There are many things that could be written, I must concentrate on those which I really have a desire to write.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: SDR-Radio-TestTeam@groups.io <SDR-Radio-TestTeam@groups.io> On Behalf Of Nils Schiffhauer
Sent: 02 January 2022 17:37
To: SDR-Radio-TestTeam@groups.io; main@SDR-Radio.groups.io
Subject: [SDR-Radio-TestTeam] SDRC Bitmap Display - short intro

Hi, all - thanks to Simon for another year having pushed the limits of SDRs and DXing forward and forward!
His "Bitmap Display" surprised me that I needed a moment to get a grip of it and its possible applications.
See the results on my website. With some screenshots, this entry is also meant to work as a quick starter:
https://dk8ok.org/2022/01/02/sdrc-new-bitmap-display-helps-to-raise-dx/

Happy New Year to all and 73: Nils, DK8OK

--
dk8ok.org









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Re: Happy New Year

jdow
 

Oh poo.
{o.o}

On 20220102 09:44:53, Simon Brown wrote:

A few hours is a few days. Adding serial number support is straightforward, I have no plans to add the 64 MHz bandwidth.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 02 January 2022 17:08
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Please somewhere in there squeeze in a few hours to put together the new RX888 knowledge to make it more useful within SDRC.

{o.o}

On 20220102 08:37:39, Simon Brown wrote:

Agreed about the training. I hope to have the AI included by Easter, then I can dig further. Still a lot to do to get a nice UI harness working.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 02 January 2022 16:31
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Tensorflow is an excellent system for this sort of thing.  The author of that article used random words to train the model, but if he used more traditional ham conversations it would help a lot, at least for amatuer use including typical abbreviations and Q signs so they would be better represented and not read as errors by the model.  The other thing that would be useful would be to send a bunch of  known CW text from an automated keyer and pick up the audio from a remote SDR, so the model would include fading and other non-linear impairments that come from real HF paths that hams deal with all the time.  The cherry on top would be to have hams send a set of known text with keyer, bug or straight key and capture that over the HF signal path as well.  

 

If the ML model is trained well, I would not be at all surprised if it could decode CW much better than the best human.  I have been surprised as to how amazing the pattern recognition capabilities of well trained models are.  The key is all in the training.  

 

Good luck,

Milo (K6CZ)

 

 

 

On Sat, Jan 1, 2022 at 1:14 PM Simon Brown <simon@...> wrote:

Milo,

 

And excellent article – something I want to understand this year.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Milo Medin (K6CZ)
Sent: 01 January 2022 20:22
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

There are a huge number of new tools for using AI today that leverage modern compute infrastructure.  Unfortunately, many of the public ML tools out there are optimized for visual image processing, as opposed to audio or RF SIGINT style uses.  But a number of efforts exist to convert audio or RF to an image, and then use the image tools to do the training and generate a model for decoding.  While the training is computationally expensive, once the model is built, it can be pretty efficient to run.  

 

Here is one that is aimed at the cw decoding problem specifically that outlines use of some common AI tools: http://ag1le.blogspot.com/2019/02/training-computer-to-listen-and-decode.html

 

There was another one that used ML,  GIMP and RTL-SDR's to do signal identification using images again, but I can't seem to find it now.  

 

Good luck,

milo (K6CZ)

 

On Sat, Jan 1, 2022 at 9:55 AM Simon Brown <simon@...> wrote:

Well,

 

This actually will be a step into AI in 2023 – 1988 / 1989 I was working in AI at SWIFT, sadly the brains of the operation was on the plane that crashed at Lockerbie. 30+ years later it’s time to try and remember the theory and see how it’s changed.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 17:33
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon

You will do a great job. Solving the unsteady CW hand issue will be interesting. Even some machine produced CW will be a challenge to decode. Looking forward to your work on it in a few months from now. Computers are amazing but programmers even more amazing. Ha!

Larry K4LED 

 

On Jan 1, 2022, at 11:35 AM, Simon Brown <simon@...> wrote:



Hi,

 

I’ve often said that a computer can decode better than the human brain, now I’m trying to prove it. ‘I may be some time…’

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Larry Dodd
Sent: 01 January 2022 15:13
To: main@sdr-radio.groups.io
Cc: SDR-Radio@groups.io
Subject: Re: [SDR-Radio] Happy New Year

 

Simon. All,

Happy 2022 to all. May good SDR things happen this year. Good luck Simon on the CW decoder. It’s much needed. 

Larry K4LED 

 

On Jan 1, 2022, at 9:02 AM, Simon Brown <simon@...> wrote:



Hi All,

 

Over here it’s 2022 so a very happy new year to you all. I’ve updated the current V3.1 beta and am now spending January designing a CW Decoder harness which I hope will help me develop a good CW Decoder, so for January and possibly February you’ll not be hearing much from me 😊 .

 

Be good in 2022,

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


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