XPR7550e DMR

[tbille]

Hi Everyone,

I have done quite a bit of work on the APX and XTL line of radios, but I have not dabbled in DMR. Let me preface this with that I am no expert and I'm currently in school for criminal justice and I find radios very interesting; Im learning, so I apologize for any incorrect terminology.

I purchased a MotoTRBO XPR7550e about 6 months ago to be able to listen to the campus safety where I go to school along with some surrounding agencies. I had programmed in two DMR frequencies and everything was great! I was able to receive them perfectly. The radio and all frequencies were in RX only mode for the exception of some GMRS frequencies.

Then I got ambitious and trued to add a few more. I programmed them the "same way" and then all of a sudden I was no longer receiving any audio from any DMR frequencies. Analog frequencies were working fine, that's what I'm familiar with.

I have some friends that do volunteer work and are employed with agencies from home. They have been helping me as I learn everything. They were willing to take a look at my cqodeplug and were unable to find anything wrong.

One suggestion was to change the radio ID as the system may have recognized it and blocked it.
I have also done some reading into RAS, but I am unclear if it applies to a radio that is only trying to receive, not transmit.

Any suggestions of what I could try next?

Thanks in advance!!

 

[tweiss3]

This sounds like RAS. If RAS is enabled, while not encryption, your radio won't play the audio without the correct RAS key. You can listen with a DMR enabled scanner, but the commercial radios won't let you listen to RAS enabled transmissions.

 

[tbille]

That’s what I figured.
Is there a way to determine if the system has RAS in the future?

I have an SDS100 and I plan on buying the DMR capability soon.

Thanks so much!

 

[K2NEC]

DMR RAS ?

How can you determine if a DMR system is utilizing RAS or not ?

forums.radioreference.com

 

[tbille]

I will get reading, thanks!