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Old February 18th 04, 09:21 AM
Jim Mac Donald
 
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They may be using the Motorola trunkig feature known as " i-Call" put your Bct-8
into
TRUNK SEARCH mode when they say "private cal" and look for new and previously
unknown talk groups with chit chat traffic. An i-Call takes two (2) talk groups and

often you will only hear one side of the conversation. Also some systems have
telephone patch capabilities. Again when you here them say private call
PUNCH TRUNK and switch to conventional mode and scan the system's frequencies to
see if you get a telephone inter link. If they run phone patches this should last
several minutes
and will stand out on the system. Is there any mention of i-Calls or phone patch
frequencies
in descriptions of your system?

The i-call is active on the Nashua, NH Motorola mixed 3600 baud 800 MHz trunking
system with both analog and digital voice traffic. And the i-Cll comes in great
using a BC 250D with BCi25D digital card .I hear what appears to be i-Calls with
the PRO-90 when in TRUNK SEARCH again
just one sided conversations, this may be due tot he DELAY being on!

Using a NEXTEL is defiantly another possibility, around New England when folks
want to transition to NEXTEL they will say sot or ask if one has there CELL PHONE
with them, to give or take a call from the base or another moble unit !
Jim
LAWMAN267 wrote:

I have a Uniden bct-8 and have my local agencies all programed in. I hear
everything except when they go to a private call. Are you able to monitor
private calls? Local agencies are using Motorola type 2 systems, and I have all
the freqs programmed. Any help will be greatly appriciated.




 
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