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Digital Voice Decoding Software For discussion of software applications which decode digital voice formats such as P25, NXDN, MotoTRBO, etc. Please use the HF Digital Signals forum for anything below 30MHz.

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  #301 (permalink)  
Old 11-12-2012, 1:44 PM
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Default DSD source code

Does anyone have the source for 1.6, and maybe 1.5? I'd like to be able to see the change history.
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  #302 (permalink)  
Old 11-14-2012, 8:25 PM
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Quote:
Originally Posted by mtindor View Post
I can email it to ya. PM me your email address -- don't post it here. What version you want? I've got 1.4.1, 1.5.1 and 1.6.0 Beta. I'd see no reason why you would want anything other than 1.6.0 Beta, but it's your choice.

If I email it to you and your computer blows up / gets a virus or your dog dies, I am not responsible.

mike
Well I got it from the binaries and installed cygwin from your link. This has probably been answered, but I read past posts till my eyes were blurry and didn't see it.

Here's what I got. I'm trying to decode trbo and +DMR gives me machine gun/garble and -DMR just gives me garble. Using - DMR I see what I would expect to see on the screen, and it is very similar to other screens I've researched that are successfully decoding moto trbo. However the output audio is nothing but garble. I've tried line in level settings from low to high, with no difference until it drops out from being either too low or too high. I'm using a discriminator tap out of a Uniden BC855XLT. I have enough signal so that the discriminator output is not in the noise. (30ft. antenna, xmitr just a couple miles away). I would still suspect the bearcat being garbage though! The screen shows decoding voice, sometimes lots of = sometimes only two or three ==.

Is it likely that the signal I'm trying to decode is using some sort of encryption? I guess the real question is if there is an easy way to determine if that is so or not. Otherwise, I don't know what I could be doing wrong, or what hardware may be failing. BTW I've tried both ver 1.6 and ver 1.4.1 with the same results. Also, strangely enough, depending on what computer I'm using, minus seems to be the correct polarity on one while plus seems to be the correct polarity on the other one. Strange.

Thanks for any info,
Dennis
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  #303 (permalink)  
Old 11-15-2012, 1:53 PM
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To all:

My previous message is now moot. I found the DMRDecode script and it tells me the signal I am listening to is encrypted. So that was my problem with the DSD garble. Lots of good info on here though, and I appreciate having access to it. Thanks
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  #304 (permalink)  
Old 11-19-2012, 9:19 AM
   
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Default Problem with download links

Can't download zip files on 3D.minus.
How to?
Thanks very much.
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  #305 (permalink)  
Old 11-19-2012, 10:13 AM
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Quote:
Originally Posted by spoutnikal View Post
Can't download zip files on 3D.minus.
How to?
Thanks very much.
Then download them from the backup location [at your own risk of course]. I don't personally feel there is any risk [it's my site that houses the backup listed in the wiki], but I take no responsibility for what you download there. Either you trust it or not.

http://wiki.radioreference.com/index...are_package%29

Given the fact that nobody has been able to download from minus for the past week or so, I have no clue if they are going to come back online or not.

Mike
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  #306 (permalink)  
Old 11-29-2012, 4:00 PM
   
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Default What does mean F=0 F=1 ?

Hi, i'm decoding some streams and i got frames :

Sync: +DMR mod: GFSK inlvl: 63% [SLOT0] slot1 F=0 VOICE e:=====R==================R=====R===E==========R== ==R==
==
Sync: (+DMR) mod: GFSK inlvl: 57% slot0 [slot1] F=1 VOICE e:========R========R=====R=====================R== =====
========R

Where can i find description of all values like F ?

Regards!
Chris
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  #307 (permalink)  
Old 12-29-2012, 8:08 PM
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Hi All,

Please forgive me as I am new to this sort of decoding.

Im not to sure where to get or which software I would need to decode

NXDN - Nexedge
Mototrbo

My local PD has gone Nexedge and I have local Mototrbo users in my area.
That I would like to monitor

I am running Windows XP on home PC
and Linux Ubuntu on laptop

Also using a GRE-PSR-800

I have read all the posts in this thread and I am so confused
Forgive again

Any help would be greatly appreciated.

Thanks
Scott
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  #308 (permalink)  
Old 12-30-2012, 10:34 AM
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Question

Hi again,

So with some digging , ive been able to locate the files to download.
Install , and start decoding.
I get codes and parameters on the C prompt screen
but no garbled audio / digital voice from speakers.
Just the hissing noise. the hissing noise stops for the duration when that frequency is active.

From the picture I have attatched, you will see that I am getting something.

I have managed to tweak the signal to 99%, but no audio still.

Any thoughts?

Scott
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  #309 (permalink)  
Old 12-30-2012, 10:37 AM
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Are you getting the audio from a discriminator tap? Taking it from the speaker filters out info needed to decode.
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  #310 (permalink)  
Old 12-30-2012, 12:56 PM
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Hi n9mxq

Im using my GRE-PSR800 with the IF output enabled through the headphone jack to my line in of my pc
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  #311 (permalink)  
Old 12-30-2012, 1:14 PM
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Quote:
Originally Posted by RainbowSix View Post
Hi n9mxq

Im using my GRE-PSR800 with the IF output enabled through the headphone jack to my line in of my pc
nevermind

Last edited by kma371; 12-30-2012 at 1:48 PM..
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  #312 (permalink)  
Old 12-30-2012, 1:26 PM
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The GRE PSR-800 IF out put IS a discriminator tap.
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  #313 (permalink)  
Old 12-30-2012, 1:45 PM
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Is there any files im suppose to make up and add into folders or do I just install and tweak the audio settings?

As from my pic, I am getting something.

im close, but yet so far away.

im using a old PC

Win XP - SP2
Intel Celeron processor
400mhz, 224 mb of Ram (LMFAO)
with a Creative Sound Blaster PCI soundcard

If I knew how to install the software onto my Panasonic Tough book laptop (Linux - Ubuntu) ,
I would also try to use it on there too.
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  #314 (permalink)  
Old 12-30-2012, 1:49 PM
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Quote:
Originally Posted by RainbowSix View Post
Is there any files im suppose to make up and add into folders or do I just install and tweak the audio settings?

As from my pic, I am getting something.

im close, but yet so far away.

im using a old PC

Win XP - SP2
Intel Celeron processor
400mhz, 224 mb of Ram (LMFAO)
with a Creative Sound Blaster PCI soundcard

If I knew how to install the software onto my Panasonic Tough book laptop (Linux - Ubuntu) ,
I would also try to use it on there too.
you may need to invert the audio.

List of DSD startup parameters/arguments
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  #315 (permalink)  
Old 12-30-2012, 1:59 PM
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Quote:
Originally Posted by kma371 View Post
you may need to invert the audio.

List of DSD startup parameters/arguments
Where would I find theses parameters to adjust or change?
On the main C prompt screen I get the usual start up message with the curser flashing.
I cant type anything in.

Then all the data starts to flow, just no audio

Is there a file I have to make up or edit first?
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  #316 (permalink)  
Old 12-30-2012, 2:03 PM
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Quote:
Originally Posted by RainbowSix View Post
Where would I find theses parameters to adjust or change?
On the main C prompt screen I get the usual start up message with the curser flashing.
I cant type anything in.

Then all the data starts to flow, just no audio

Is there a file I have to make up or edit first?
you need to open DSD from a command line if you want to change the settings.

the parameters are in the link I sent.
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  #317 (permalink)  
Old 12-30-2012, 2:21 PM
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On a 400 Mhz Celeron, I'd wonder if you'd ever get an intelligible word from a TRBO stream.

At any rate, since your'e trying, decrease the audio on the PSR-800 (arrow down) to the point that DSD shows an INLVL around 25-35 (which seems to be the best for me).

Then, keep in mind the following:

1. Systems aren't transmitting voice all of the time. You may monitor a system and never see a voice frame for a day or more.

2. Just because you see voice frames doesn't mean you're going to be able to listen to them. If they are using either encryption method, you won't hear any voice.

If your area is like mine, there are probably a dozen or more TRBO signals on the air on VHF and UHF. You might want to move on to monitoring some other TRBO signal and see if you have better luck.

Mike

PS: I had a Intel T5750 Core 2 Duo 2 Ghz processor that could not provide a clear decode because the whole decoding process used up all CPU resources. On a 400 Mhz Celeron, I am betting DSD probably runs 100% any time a voice transmission occurs. Hell, it might even run near 100% even when it isn't trying to process voice. I really wouldn't get my hopes up with that setup.


Quote:
Originally Posted by RainbowSix View Post
Is there any files im suppose to make up and add into folders or do I just install and tweak the audio settings?

As from my pic, I am getting something.

im close, but yet so far away.

im using a old PC

Win XP - SP2
Intel Celeron processor
400mhz, 224 mb of Ram (LMFAO)
with a Creative Sound Blaster PCI soundcard

If I knew how to install the software onto my Panasonic Tough book laptop (Linux - Ubuntu) ,
I would also try to use it on there too.
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  #318 (permalink)  
Old 12-30-2012, 2:40 PM
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Quote:
Originally Posted by kma371 View Post
you need to open DSD from a command line if you want to change the settings.

the parameters are in the link I sent.
kma371

Thanks for the link, I was able to find my way into the start up parameter field, but now have to figure out what I need to change and how.

Is it a case where you change everything you need to change before running the program?
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  #319 (permalink)  
Old 12-30-2012, 2:45 PM
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Quote:
Originally Posted by mtindor View Post
On a 400 Mhz Celeron, I'd wonder if you'd ever get an intelligible word from a TRBO stream.

At any rate, since your'e trying, decrease the audio on the PSR-800 (arrow down) to the point that DSD shows an INLVL around 25-35 (which seems to be the best for me).

Then, keep in mind the following:

1. Systems aren't transmitting voice all of the time. You may monitor a system and never see a voice frame for a day or more.

2. Just because you see voice frames doesn't mean you're going to be able to listen to them. If they are using either encryption method, you won't hear any voice.

If your area is like mine, there are probably a dozen or more TRBO signals on the air on VHF and UHF. You might want to move on to monitoring some other TRBO signal and see if you have better luck.

Mike

PS: I had a Intel T5750 Core 2 Duo 2 Ghz processor that could not provide a clear decode because the whole decoding process used up all CPU resources. On a 400 Mhz Celeron, I am betting DSD probably runs 100% any time a voice transmission occurs. Hell, it might even run near 100% even when it isn't trying to process voice. I really wouldn't get my hopes up with that setup.
mtindor,

That gives me something to think about. especially if it doesnt work on my system.
I guess an alternate solution would be to try and getting working on my laptop (Linux-Ubuntu)

Thanks,
I hope I have enough info to work through the rest of it on my own.

I will keep everyone posted.

Regards
Scott
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  #320 (permalink)  
Old 12-30-2012, 3:08 PM
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trying inverting the audio first.
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