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TRBO DIGITAL PROGRAMMING

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BigJim
Posts: 143
Joined: Thu Aug 15, 2002 8:48 am

TRBO DIGITAL PROGRAMMING

Postby BigJim » Tue Apr 24, 2012 3:29 pm

Can the XPR4550 be programmed to monitor other UHF TRBO Repeaters running digital if all you know is the operating frequency? We are still running an analog system as we have quite a few non-digital radios still iin service.

Also can the 4550 be programmed to operate simplex on digital? My unit is capable of both analog and digital.

I'm fairly new to the TRBO units and have only programmed conventional freqs and tones so far.

Thanks for any and all info on this subject!!

BJ

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wavetar
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Joined: Sun Sep 09, 2001 4:00 pm

Re: TRBO DIGITAL PROGRAMMING

Postby wavetar » Wed Apr 25, 2012 2:30 am

You would have to know the repeater's color code, and the talkgroup number(s) to monitor. There is no "Digital CSQ" like in the Astro series to unmute everything. Then of course they could also be using 16 or 42 bit encryption as well.

Yes, the radios can operate in digital mode on simplex as well, but you lose the 2-for-1 TDMA...so only one conversation at a time.
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515
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Re: TRBO DIGITAL PROGRAMMING

Postby 515 » Thu Apr 26, 2012 1:44 pm

This utility works good for finding out the timeslot, color code and talkgroup info, and determining if they use encryption (privacy) or not:

https://github.com/IanWraith/DMRDecode

All you need is an analog receiver with a discriminator tap. Feed that discriminator audio to your PC's sound card line-in jack, and run the program.

BigJim
Posts: 143
Joined: Thu Aug 15, 2002 8:48 am

Re: TRBO DIGITAL PROGRAMMING

Postby BigJim » Thu Apr 26, 2012 2:01 pm

Thank you guys!!

MattSR
Posts: 760
Joined: Mon Apr 21, 2003 10:00 pm

Re: TRBO DIGITAL PROGRAMMING

Postby MattSR » Fri Jul 13, 2012 5:21 pm

wavetar wrote: Then of course they could also be using 16 or 42 bit encryption as well.


16 or 42 bit? Basic Privacy is 8 bit and advanced Privacy is 40 bit. I'm not sure what the 16 or 42 is referring to.


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