DSDPlus SDR# + DSD FastLane and Basic Privacy Decoder

[Forts]

You don't need to worry about the centre frequency. It's showing you the the receive frequency is set to 465.7250

Dev 1 Freq 465725000 Gain 0 PPM 60 BW 12 SQ 100 VOL 2

If you are trying to listen to DMR you won't want a bandwidth of 12 though (you want 7.6) but I cant recall off the top of my head the command to change it, and I don't have it in front of me at the moment.

 

[iu4jic]

so you're telling me that I don't have to consider the Frequency Center entry?

 

[lwvmobile]

so you're telling me that I don't have to consider the Frequency Center entry?

Center frequency is offset for the DC spike. That being said, if the signal is poor, this isn't going to work, not sure what the signal was like from the SDR# screenshot, but either it was a trickle because the RTL gain was all the way down in SDR#, or that tiny bump was something else, not sure.

 

[iu4jic]

dsd-fme -b 70 -fs -i rtl:0:154987500:0:-2 should be good enough to get you started.

Breaking it down, that is:

-b 70 to use Motorola BP key 70. Change this to the appropriate key number.
-fs to decode only DMR
-i rtl:0:154987500:0:-2 to use the rtl input, device 0 (first indexed), insert frequency, auto gain, and -2 PPM (change to appropriate value)

The precompiled release has a ton of examples, otherwise, either just open a shell or terminal in the dsd-fme folder and run that command, or make a .bat file to do it for you each time.

So if I understand correctly, I can try with the -b option and try all the numbers from 1 to 255 until I hear the voice? Is this a test I can do, right?

 

[lwvmobile]

So if I understand correctly, I can try with the -b option and try all the numbers from 1 to 255 until I hear the voice? Is this a test I can do, right?

Maybe you shouldn't say the thinking part out loud.