DSD no signal

[pinkfish457]

Let me correct the screenshots. They were uploaded in the wrong order. My DSD program is the bottom image. The top image is a sample that DSDPLUS uploaded.

 

[deboe]

You say it's P25 voice, Try passing dsdplus a -f1 so it does not have to try and figure out what it's going to decode.

If you switch your output to your speakers in sdrsharp do you hear the data?

Dylan

 

[cg]

Perhaps you can you post what system/frequency you are trying to monitor?

If your location is accurate, the frequency in the screenshot you posted is what you are trying to monitor and the RR database is correct, then you are trying to use DSD+ on an analog control channel of a Motorola trunked system

DSD+ will not decode the control channel traffic. You would first use a control channel decoding program such as Trunk88 or UniTrunker.

chris

 

[pinkfish457]

Is there a way to feed a signal (tone) to DSD+ to check the VBCable input. I'm not referring to Unitrunker or SDR#, but a stand-alone tone generator. Still having problems with no audio into DSD+ from either Unitrunker and SDR# using the VBCable in.

 

[reconrider8]

Just msged you pinkfish

 

[slicerwizard]

A couple of questions...

- Why are you not using the latest version of DSD+?

- Why is there only one sound source? Why isn't a Realtek device listed?


Definitely an odd / nonstandard setup.

 

[pinkfish457]

Finally got it working

I was able to setup Unitrunker & DSD+ to receive a local EDACS system.

I used a PRO-106 scanner for the signal channel, VBCable, a R.S. interface cable and NooElec R820T2 SDR for the voice channel. Everything is working great but I have a few issues. The voice channel is squelched until a voice transmission is heard. After the signal stops, the signal will squelch as it should, but after a few more seconds the channel un-squelches without a voice transmission. How can I keep the voice channel noise level down.

The transmissions from the dispatch are very clear, the voice from the units are slightly garbled. How can I correct this?

Attached is a screen grab of the working setup. The screen grab from DSD+ shows the first attempt, I later ran DSD+ using -i1M -fp.

 

[SCPD]

The voice channel is squelched until a voice transmission is heard. After the signal stops, the signal will squelch as it should, but after a few more seconds the channel un-squelches without a voice transmission. How can I keep the voice channel noise level down?

The voice receiver's squelch setting is zero.

Manually tune the voice receiver to a quiet frequency - preferably in the same band (866 Mhz). Increase the squelch until it is quiet. Cross-check this by manually tuning to a know active frequency. You should hear audio. As a side benefit - setting the squelch - for both signal and voice receivers - allows you to use the auto drift correct feature to keep both RTL sticks calibrated. A squelch value of zero turns this feature off.