This appears to be an LTR system, and the key-ups are used to keep the
subscriber units connected with the system. Try using an LTR capable
scanner such as a BC780, and give it a go.


In article ,
Tempest wrote:

Hey all.

A small town local to me does something that I think is meant to
discourage eavesdropping on their public communications.

When their system is not in use for broadcast, the system 'keys-up'
about every 2 seconds, as if someone was sitting somewhere pushing the
PTT button on their radio.

This, of course, makes monitoring a pain because the scanner stops
every time it hits the active frequency.