- Joined
- Oct 30, 2009
- Messages
- 745
Just heard TG 1809 it was BOEC dispatching engine 11 to respond on Ops 1. Multiply 1809 by 16 and you get TG 28944 which is Tapout on 800.
Just heard TG 1809 it was BOEC dispatching engine 11 to respond on Ops 1. Multiply 1809 by 16 and you get TG 28944 which is Tapout on 800.
Good find! I wonder if that applies to all Talk Groups?
Do you mean the multiply by 16 thing?
Yes. Assuming it does, there will be 2048 talk groups corresponding to the Analog Talk groups, using 32 spacing. I wonder how many can be on a digital system.?
I don't know the exact number of TGs but there are some pretty big P25 systems out there. Look at Colorado DTRS and Illinois StarCom for example.
If a talkgroup is present on both a P25 system and an 800MHz system, the one on 800 MHz will be 16 times larger in number. So when a new TG comes up on the P25 side, I multiply it by 16 to see if its also on 800. You could also go backwards and divide the 800 TGs by 16 and pre-program the P25 system in your scanner. Some people do this in other parts of the country when their area is switching from 800 to P25.
I don't know the exact number of TGs but there are some pretty big P25 systems out there. Look at Colorado DTRS and Illinois StarCom for example.
The only users on the system right now are specialty law units like drugs/vice etc. which are all encrypted. Patrol units are still on the 800 MHz analog system. I have no idea when patrol units and fire will switch over but talk here in the forums has been that dispatch talkgroups for police will be in the clear. I wouldn't expect fire to use encryption.
Clear traffic on 717 which is PPB SERT/SWAT Tac 1 (11472 on the 800 system). Seems promising that one of the swat channels is in the clear.
Was this for the incident on SE Lambert last night? Were the transmissions P25 Phase I or Phase II?
Do we know if anyone has gone through and multiplied the whole 800Mhz DB? ...