In Reply to: Wierd tones on 3312 posted by The Big O on March 29, 2000 at 15:35:36:
: This morning around 9:45 I have heard on 3312 about 20 beeps over 3 minutes (don't know how long it was going before I tuned in). Someone then got on the air, said something, and then dispatch said air is cleared (or open), and then two beeps followed.
: Any ideas?
If the tones are what I think they are, they signal that the "air is closed" because of an event that may require emergency radio traffic, such as a pursuit, manhunt, etc. The short tones are transmitted so that units tuned to the channel know it is closed without having to transmit. Hope this helps.
zach
zach770@hotmail.com