DSDPlus DSDPlus - Trunked Only?

[titanshadow]

I'm just starting out with an RTL SDR and I was wondering, I think that I got DSDPlus working-ish... It displays information in the window for various digital signals, but I found out those are trunked. I don't have Unitrucker because I dont' have 2 SDR dongles.

However, I wanted to know if the only digital signals are trunked ones? I'm asking to save myself time, I will continue to look for an untrunked digital signal to test DSDPlus with (and general fun factor) but I don't want to continue if the only thing's it can decode are trunked signals which I can't do anything with.

 

[M105]

First of all with two dongles and DSD+ you can track a trunked system. Set one up as the control channel (CC) receiver and one as the voice channel (VC) receiver. The CC will control the VC. The instructions are in the trunking.txt file and scattered throughout the forums here.

Secondly, trunked systems have voice channels so you can set your dongle to one of those frequencies and decode whatever winds up on it. This is really useful only for testing but it will tell you if the digital system in question can be decoded.

Thirdly. Not all digital is trunked. There is a lot of DMR and D-Star out there running station to station or on conventional repeaters. You will find most of it in the VHF and UHF bands.

 

[phyberoptics]

I use DSDPlus to track non-trunked digital, and also many analog signals too. I use 3 sticks for DSD, 2 of them are RTLSDR v3 which I use by calling FMP24 (One in CC mode, one in VC mode) to track trunked systems, and then I use a 3rd stick, which is an older Nooelec stick called by this batch file which allows me to hear analog, and digital non-trunked (my local FD is a single channel P25 for example). Here is my startup:

start FMP24 -i4 -o20001 -_1 -b-12.5 -a0 -g28 -q1 -P0.3 -f151.385 -wsl0.892
start DSDPlus -o1 -- -i20001 -_1 -m2 -v4 -O NUL -wsl795.645 -wss100.200 -wel490.0 -wes460.600 -wcl650.892  >>VC.log

The -m2 switch allows me to hear analog and digital signals. Do some research on how the -m switch works to see if you need to switch it up for your preference. Also, I can tune to the AM Aircraft band, and press d in the FMP24 window, and it will switch the modulation from FM to AM. It's pretty all-encompassing.

 

[dave3825]

I'm just starting out with an RTL SDR and I was wondering, I think that I got DSDPlus working-ish... It displays information in the window for various digital signals, but I found out those are trunked. I don't have Unitrucker because I dont' have 2 SDR dongles.

Unitrunker can run perfectly fine with 1 dongle as long as the system its monitoring fits with in the dongles bandwidth. Post a link to a system you want to listen to.

However, I wanted to know if the only digital signals are trunked ones?

No, there are conventional freqs that use digital. Depending how you run it, DSDPlus can decode trunked and non trunked freqs.

I'm asking to save myself time, I will continue to look for an untrunked digital signal to test DSDPlus with (and general fun factor) but I don't want to continue if the only thing's it can decode are trunked signals which I can't do anything with.

What can't you do with a trunked signals that you can do with non trunked?

What exactly would you like to do?