Need help figuring out mototrbo radio.

[Goofy5851]

Ok guys. I need your help desperately. I am trying to get a mototrbo radio programed in DMR xpr5550 to work with my Radioddity gd77 to communicate with each other using DMR. No repeater. Very simple setup. I have tried everything I can think of. Only thing I can think of is something with the numbers is wrong. But any advice or a step by step would be greatly appreciated of doing it.

Chris

 

[K2NEC]

Well what have you tried? What are you transmitting on? Are you sure your programming is right?

Nothing with either model numbers matters as long as the radios are the same frequency range operating on the same frequency.

 

[jaspence]

I am not familiar with either of those DMR radios (I have Btech 6x2, Hytera, and a RFinder), but I have read that some things do not work due to M propriety abilities vs the GD77 being at the other end of the quality spectrum. I have also seen articles that suggest simplex is handled differently in some of the CCR DMR radios, which would be a showstopper.

 

[WA0CBW]

As jaspence said not every DMR radio handles simplex the same. Since the repeater provides the sync for time slots using simplex means there are two time slots but no sync data to tell which one is which and when each starts and ends. What are some of the things you have tried? Have you tried programing both time slots the same?
BB

 

[Forts]

Make sure both radios aren't set to the same RID....

He said he's not using a repeater so there should be no compatibility issues (my GD-77 talked to my Moto and Hytera radios just fine).

Make sure the freq is the same, color code and group call talkgroup as well . Assign the group call contact as the TX contact in the channel details.

 

[N4KVE]

Remember, in simplex admit criteria is always, but on a repeater, it’s color code free.