RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > Scanners and Receivers Forums > Software Defined Radio

Software Defined Radio A forum for general discussion of software defined radio (SDR) receiver equipment.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 07-17-2014, 9:44 PM
Member
   
Join Date: May 2014
Location: Eastern, Ohio
Posts: 39
Unhappy Unitrunker Trunking problems?

I wanted to try Trunking with my RTL dongles, Unitrunker, and DSD.

I setup unitrunker using 2 RTL sticks. Signal and Voice.
Signal is parked on the closest cities MARCS tower frequency and Unitrunker pulls up the window with my Site info.

Everything is setup according to: RTL-SDR Tutorial: Following Trunked Radio with Unitrunker - rtl-sdr.com

I see status text that people "Joined" and "Call" but I have never heard anything other than the trunking sound in over 6-7hours.
I don't think it's digital, but DSD is running with the Virtual Audio Cable just in case.
DSD has never picked anything up, even on the Control channel.

Should I assume that no one is using this MARCS freq?
I'm not sure what I am doing wrong.
Can anyone shed some light on my situation?
__________________
| Uniden BC246T Scanner | BaoFeng UV-82 Transceiver | RTL-SDR Software Defined Radio |

Last edited by Circa; 07-17-2014 at 10:08 PM..
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 07-17-2014, 11:22 PM
W8RMH's Avatar
Member
  Audio Feed Provider
Audio Feed Provider
Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2009
Location: Columbus, Ohio
Posts: 3,785
Default

Don't know if it matters but MARCS is not a digital system. It is a Motorola Type II SmartZone Omnilink which uses digital voice.

Which site are you trying to receive. (I am familiar with MARCS but I don't know squat about SDR).
__________________
BCD996XT BCD396XT BCT15X BCT15 Bearcat IV
Columbus Police Live Audio
Reply With Quote
  #3 (permalink)  
Old 07-18-2014, 8:42 AM
Member
   
Join Date: Jun 2014
Posts: 51
Default

Try using VB Cable instead from here. I had a similar problem with Virtual Cable, nothing would go to DSD but for some reason I switched to VB Audio Cable and it started working. Make sure your control channel is muted and that your voice channel is also routed to VB Cable, not muted, and from my experience, auto-gain being on, also make sure de-emphasize isn't checked. Also, when in the voice receiver window, when a call comes through, do you see it at the bottom of the receiver window?
Reply With Quote
  #4 (permalink)  
Old Yesterday, 1:59 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jun 2014
Posts: 9
Question Help With Unitrunker

Ok, I guess I'm not the sharpest knife in the drawer. I cannot figure out how to install Unitrunker as a plugin to SDR#' I downloaded Unitrunker and ran the UniTrunker-1.0.29.5.msi program. All it seemed to do is copy the files to a folder of my choice. SDR# doesn't recognize it. It would seem that an "< ADD KEY.... \> entry needs to be added to the plugins.xml file. What would that look like?

Anyway, if I can get over that hurdle I'd try the following configuration:

Dongle RTL2832U/R820T (Control) -----------> SDR# Instance A


Dongle RTL2832U/E4000 (Voice) --------------> SDR# Instance B

It seems like I need a virtual cable to get the audio from B to A and another one to get tuning control from A to B. This js not that complicated but the implementation could be nasty.
Reply With Quote
  #5 (permalink)  
Old Yesterday, 2:05 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jun 2014
Posts: 9
Question Help With Unitrunker

Ok, I guess I'm not the sharpest knife in the drawer. I cannot figure out how to install Unitrunker as a plugin to SDR#' I downloaded Unitrunker and ran the UniTrunker-1.0.29.5.msi program. All it seemed to do is copy the files to a folder of my choice. SDR# doesn't recognize it. It would seem that an "< ADD KEY.... \> entry needs to be added to the plugins.xml file. What would that look like?

Anyway, if I can get over that hurdle I'd try the following configuration:

Dongle RTL2832U/R820T (Control) -----------> SDR# Instance A


Dongle RTL2832U/E4000 (Voice) --------------> SDR# Instance B

It seems like I need a virtual cable to get the audio from B to A and another one to get tuning control from A to B. This js not that complicated but the implementation could be nasty.
Reply With Quote
Sponsored links
        
  #6 (permalink)  
Old Yesterday, 9:16 PM
Seņor Member
  RadioReference Database Admininstrator
Database Admin
 
Join Date: Dec 2001
Location: Texas
Posts: 5,935
Default

Hi KF6

Configure your R820T stick as a signal receiver in Unitrunker. Set the correction factor and park the receiver on an active control channel. A site window should appear.

Unitrunker does not support your E4000 stick so you must use SDR#.

Configure SDR# to use the E4000.

Verify both programs are working independently before moving on.

Search this forum for links to an updated plugin that works with current versions of SDR#. Edit your plugins.xml file and place the trunking plugin in the same folder as SDR#.

In Unitrunker, create a new "Debug" receiver. Set it to the Voice role. Do NOT set the receiver to running just yet. Click the Folder button on the Debug receiver's Toolbar. Copy the complimentary DLL - "Remote.DLL" to this folder. Now you can set the Debug receiver to Run.

Turn on "Listen" on the Unitrunker main Options tab. If there's any call activity in the Site window, one call will turn green. That's the call that you *would* be listening to if the plumbing between Debug receiver and SDR# was complete. You can verify this by selecting the Debug receiver and scrolling to the bottom. The active voice call's details will appear there.

Back to the receiver's folder in Windows explorer. You should see a text file in that folder that is updated each time the Debug receiver tunes to a new call. The SDR# trunking program needs to be configured to find and read that file.

Once you've done that, SDR# should start following voice calls.

If the system you're monitoring is mostly digital - more steps are required to decode digital voice.

Good luck.

Note - if you purchase a second R820T stick, you can configure that as a voice following receiver directly in Unitrunker and avoid the hassle of configuring plugins (and save your E4000 for other monitoring duties). In fact, order two R820Ts so you'll have a spare.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 9:33 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2011 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions