Encryption on Suffolk County P25 MEDCOM channel?
LIScanner101, Mon Apr 06 2020, 05:47pm

The other day on my PRO-668 I was able to log RID 4416354 and was able to make out (clear as day) that this was East Hampton 9-1-6. I heard them in the clear only one other time that day. Today, I have seen that same RID pop up several times, but now there is no audio. Does this mean they are now encrypted?

Re: Encryption on Suffolk County P25 MEDCOM channel?
GTR8000, Mon Apr 06 2020, 07:37pm

Run Unitrunker or DSD+ or some other software that decodes P25 control channels. That's the most reliable way to check for encryption usage.

Re: Encryption on Suffolk County P25 MEDCOM channel?
LIScanner101, Mon Apr 06 2020, 07:40pm

GTR8000 wrote ...

Run Unitrunker or DSD+ or some other software that decodes P25 control channels. That's the most reliable way to check for encryption usage.


Thanks for the suggestion. Sorry about writing "TGID", I meant "RID."
Oddly I just saw that RID pop up again but this time there was audio and once again it was East Hampton 9-1-16. They may have switched encryption on for some reason.


Re: Encryption on Suffolk County P25 MEDCOM channel?
GTR8000, Mon Apr 06 2020, 07:46pm

Or you're just not decoding the system that well, and are missing transmissions. I thought GRE/Whistler scanners make a "busy tone" when they encounter an encrypted transmission?

Re: Encryption on Suffolk County P25 MEDCOM channel?
LIScanner101, Mon Apr 06 2020, 07:53pm

GTR8000 wrote ...

Or you're just not decoding the system that well, and are missing transmissions. I thought GRE/Whistler scanners make a "busy tone" when they encounter an encrypted transmission?


They do, but I set mine to "silent". Probably time to switch it back to "busy signal."

Re: Encryption on Suffolk County P25 MEDCOM channel?
GTR8000, Mon Apr 06 2020, 08:12pm

Ah okay, I forgot they had options for that setting...been years since I've bothered with any GRE designed products.