TRX2 Phase 2 only

[Trump20]

Does anyone know if there is a way to program TRX2 for phase 2 only?

 

[tvengr]

Why would you want to do that? When programmed for P25, you will receive both Phase 1 and Phase 2 talkgroups.

 

[RaleighGuy]

Why would you want to do that? When programmed for P25, you will receive both Phase 1 and Phase 2 talkgroups.

One reason I'd like to do it is to determine what new P2 TGs are in use on a system that uses both phase 1 and 2. Sometimes isolating modes like that isn't about scanning, it is used to find or isolate what is being used.

Does anyone know if there is a way to program TRX2 for phase 2 only?

Unfortunately, from what I've found, the only time you can isolate Phase 2 is in the search mode, not when scanning a system.

 

[Trump20]

One reason I'd like to do it is to determine what new P2 TGs are in use on a system that uses both phase 1 and 2. Sometimes isolating modes like that isn't about scanning, it is used to find or isolate what is being used.



Unfortunately, from what I've found, the only time you can isolate Phase 2 is in the search mode, not when scanning a system.

How would one isolate phase 2 in search mode?

 

[RaleighGuy]

How would one isolate phase 2 in search mode?

Under the limit search settings in the scanner check only the X2 option and it will just scan for TDMA frequency traffic.

 

[Trump20]

Under the limit search settings in the scanner check only the X2 option and it will just scan for TDMA frequency traffic.

Thanks, but seems like I tried that before, I will try again.

 

[KevinC]

Under the limit search settings in the scanner check only the X2 option and it will just scan for TDMA frequency traffic.

Hmm...I didn't think that would work with P25 Phase 2 TDMA since it needs info from the control channel to decode. I never tried it on X2 and the only X2 we had only lasted a couple of weeks.

 

[RaleighGuy]

Hmm...I didn't think that would work with P25 Phase 2 TDMA since it needs info from the control channel to decode. I never tried it on X2 and the only X2 we had only lasted a couple of weeks.

It has been awhile since I actually tested it since the only Phase 2 system near me is a Harris TDMA CC system, and as I said in my original post it detects TDMA frequencies and traffic, it can not be used to monitor a full system's activity.

 

[Wackyracer]

Wouldn't a SDR dongle be a better option?

 

[Trump20]

In TRX2 programing, under trunked radio systems, there is a category labeled DMR CC, if I could edit that, it would work.