scanSydney

Have a listen to 487.8000 in Sydney - coming off GPT. Continuous buzz similar to what's transmitted at the start and end of a P25 transmission.

hi there, been seeing the same thing in canberra on there vote 71, its on the channels Z2ch42 (468.875) and z2ch55(469.200). its like a short burst of Data been sent when not talking. it even had my scanner confused thinking it was a trunk channel and saved it as a trunk control channel.
cheers

A day later and its still going!! This tells me three things:

1) AFP haven't had to use this channel today
2) Quantars really are rated at 100% duty cycle
3) Contrary to what some paranoid scanner people think, the feds obviously don't read these forums

citabria wrote:2) Quantars really are rated at 100% duty cycle

Of course they are 140 GRN sites with CCs on 100% can't be wrong

We have heard similar noises in the past some years ago eg the metro wide 469.1500 or metrowide 17 as it use to be referred to.
From memory that frequency had 11 sites
An educated guess is that some sort of signal mapping is going on


Grant

Thats an extremely interesting theory, given the repeater has been in place for 15+ years why would they decide to map it now?

I'd say its just hiccuped and locked on.

thats probly right on the money matt, and as people say given the tough financial times at the moment afp have probly re-deployed their radio techs to do other non radio related duties