RE: [BCD396XT] P25 Trunking questions
- I have a similar problem. The NSW GRN covers a huge geographic area. My
local control channel is Razorback, but I can also pick up Wollongong when I
use the antenna on the roof of the house. I receive very few transmissions.
The reason for this is there must be a member of the talk group logged into
my control channel site. Sydney Ambulance North users will never be
anywhere near my local site, so I don't hear any of their transmissions. My
preferred channel is RailCorp Security 4, but I only get them about 50% of
the time, depending on whether any transits are logged on in my area. If I
change the control channel to Wollongong, I can get more of their
transmissions, as there is more often someone from that talk group logged in
From: BCD396XT@yahoogroups.com [mailto:BCD396XT@yahoogroups.com] On Behalf
Sent: Sunday, 17 July 2011 1:54 PM
Subject: [BCD396XT] P25 Trunking questions
OK, so am trying to monitor a large Motorola P25 astro trunking system.
Have set a single trunk group up with all 30 (ish) control channels covering
the entire network. But, now I am mising calls.
When I program the same trunk group with only one or two of the closest
control channels, the scanner works fine and I receive trunk calls again.
Another issue.. Can someone tell me how the trunk function operates?
When you scan a trunk group with multiple control channels, does the scanner
monitor/scan all control channels continuously or simply vote to the
If it scans all the control channels, how is the scanner going to respond to
a call if it is off scanning control channels that may be out of range? Is
this where my problem lies?
Any help would be appreciated..
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