SDRuno AX.25 Decoder Program?

[Omega-TI]

I wasn't exactly sure where I should post this query, in Amateur Radio, Washington State or here. Since this has to do with a possible TSR program to use in conjunction with SDRuno, I figured this may be the best place. Anyway to the question...

Is there a third party program that will work with SDRuno that will decode AX.25 (Packet) digital transmissions of either 300 or 1200 baud?

 

[sunwave]

I wasn't exactly sure where I should post this query, in Amateur Radio, Washington State or here. Since this has to do with a possible TSR program to use in conjunction with SDRuno, I figured this may be the best place. Anyway to the question...

Is there a third party program that will work with SDRuno that will decode AX.25 (Packet) digital transmissions of either 300 or 1200 baud?

QTMM will. It hasnt been updated in 14 years.

Qtmm AFSK1200 Decoder

Download Qtmm AFSK1200 Decoder for free. AFSK1200 decoder. Qtmm is a simple AFSK1200 decoder that uses the computer's sound card for input. It can be used to decode packet radio, APRS and telemetry from amateur radio satellites.

sourceforge.net

 

[Omega-TI]

QTMM will. It hasnt been updated in 14 years.

Qtmm AFSK1200 Decoder

Download Qtmm AFSK1200 Decoder for free. AFSK1200 decoder. Qtmm is a simple AFSK1200 decoder that uses the computer's sound card for input. It can be used to decode packet radio, APRS and telemetry from amateur radio satellites.

sourceforge.net

Thanks. I've downloaded it and will check it out and give it a go on Wednesday when I have time. Using one program and not dealing with yet another cable (patch cord) like we had to do in the old days is going to be great.

Honestly, if it'll run under Windows 10, being old is no problem. And since packet is mostly next to dead anyway...

 

[Omega-TI]

QTMM will. It hasn't been updated in 14 years.

Well, I had some unexpected time today (lucky me) so I tried it out. The program loads, but when I go to select an input there is nothing. Bummer.

 

[Spleen]

Are you using one of these to bridge the audio?

 

[Omega-TI]

Are you using one of these to bridge the audio?

View attachment 167124

Hmm, my computer only gives me the following option...

 

[Spleen]

That's why. You have nothing to feed (pipe?) the audio from SDRUno to the AFSK decoder.

Install this.

It wil require a reboot, but when you open SDRuno, you'll have another output device to choose from (like in my pic before). The corresponding input entry should show up in your AFSK app as an input choice. You'll probably have to experiment with the volume in SDRuno, but it should work.

Hmm, my computer only gives me the following option...

View attachment 167154

 

[Omega-TI]

That's why. You have nothing to feed (pipe?) the audio from SDRUno to the AFSK decoder.

Install this.

It wil require a reboot, but when you open SDRuno, you'll have another output device to choose from (like in my pic before). The corresponding input entry should show up in your AFSK app as an input choice. You'll probably have to experiment with the volume in SDRuno, but it should work.

THANK YOU! It worked! The only drawback is that I cannot use other audio programs while it's in operation, but so what. I'll use it to monitor when I'm doing other things.

 

[Omega-TI]

@sunwave and @Spleen thanks guys, it works like a charm. Of course APRS isn't quite my thing, so I will try to find a local packet frequency. The one I used to operate on back in the 90's is dead silent.

 

[sunwave]

@sunwave and @Spleen thanks guys, it works like a charm. Of course APRS isn't quite my thing, so I will try to find a local packet frequency. The one I used to operate on back in the 90's is dead silent.

View attachment 167164

Glad to have helped a fellow SDRPlay product owner.

Multipsk has a few packet modes as well. index

 

[Omega-TI]

Glad to have helped a fellow SDRPlay product owner.

Multipsk has a few packet modes as well. index

Wow! That Multipsk looks to be more than this old man can take on at the moment. Of course WeFax is something I'd like to try, but probably in a simple single program.