DSDPlus How to monitor P25 conventional on DSD with FMP

[MMolina227]

I'm having a hell of a time trying to set up my RTL-SDR V3 to decode my local police departments, each one functions on a P25 conventional single frequency. I've seen too many videos on Youtube and have read countless hours of forums and articles on how to set this up to absolutely no avail.

When I open up the FMP.BAT file all I can hear is the digital undecoded noise, so I open up DSDPlus too with this command:

FMP -i1 -o20001 -P68.0 -f151.0000

And everything on DSDPlus seems like it's going to work but I keep on hearing the digital undecoded noise and nothing else.

What could I possibly be doing wrong?

 

[Kazzaw]

What output do you have DSDPlus set on? Can you share a screenshot of DSDPlus window?

 

[CanesFan95]

Which DSD+ version are you using? You should be using FMP24 instead of FMP.

I think you need a .bat file that brings up both FMP24 and DSDPlus in the same file, like this:

START CMD /c "FMP24 -i1 -o20002 -f460.0 -g28.0 -b9.5 >FMP24-Conventional.log"

START CMD /c "DSDPlus -i20002 -v2 >CC-Conventional.log -rv -_1 -T"

In the Event Log, click on Decoder and make sure the modes you want are checked.

 

[MMolina227]

What output do you have DSDPlus set on? Can you share a screenshot of DSDPlus window?

I'm trying to upload a photo but it's says it too large. My output device are the computer speakers

 

[MMolina227]

Which DSD+ version are you using? You should be using FMP24 instead of FMP.

I think you need a .bat file that brings up both FMP24 and DSDPlus in the same file, like this:

START CMD /c "FMP24 -i1 -o20002 -f460.0 -g28.0 -b9.5 >FMP24-Conventional.log"

START CMD /c "DSDPlus -i20002 -v2 >CC-Conventional.log -rv -_1 -T"

In the Event Log, click on Decoder and make sure the modes you want are checked.

I'm using the Free version DSDPlus and FMP

 

[CanesFan95]

I'm not sure if the freebie version has FMP24 or just FMP, but if you have FMP24.exe, try that instead. Also click on Output in the Event Log window and make sure Synthesize All Digital Voice is selected. Then go to Control and make sure none of the lockout L/O options are chosen.

 

[Kazzaw]

I'm trying to upload a photo but it's says it too large. My output device are the computer speakers

Try post on a site like imgur and send the link. Most people can post screen clips here without issue