Snohomish County PUD Radio Operations Manual • Rev. 6/03
86
Section VI
Alert Tone Description Refer To
Computer System A “bah-bah-bah-bah” tone when the
Busy system is accessed indicates that all
available channels are busy and your
radio is in queue for the next avail-
able channel.
Call Back A group of three medium-pitched
tones [di-di-dit] indicates that a
Talkgroup is now available for your
previously requested transmission.
Talk Permit Tone A group of three medium-pitched
tones [di-di-dit] indicates that a
Talkgroup is now available for your
requested transmission.
Basic Mobile Radio Operation Concepts
Your Snohomish County PUD mobile radio offers a number of advantages,
including fast system access, enhanced privacy, and ease of operation. Unlike the
portable radio, it is permanently installed in a vehicle.
As with the portable radios, there is no need to check to see if a channel is busy
before a transmission; however, you do need to listen for the alert tones before
you start talking to receive information about availability of channels and fea-
tures you are trying to access. Only one attempt is required to access the comput-
erized radio network system. If all channels are busy, the call request enters a
queue and the central controller automatically assigns the next available channel.
A high pitched “dih-dih-dit” [known as the “tweedle-dee”] tone sounds when the
call may be made.
The mobile radio is used in conjunction a palm microphone. The keypad is on the
microphone.
Section VI:
Basic Mobile
Radio
Operation
Section VI:
Basic Mobile
Radio
Operation
Section VI:
Basic Mobile
Radio
Operation
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