Operating Instructions - Uniden SMH 4000 Service Manual

1. Press the On/Off Volume Control to switch the radio on.
2. Adjust the volume to a comfortable level by rotating the On/Off Volume Control
clockwise to increase the volume or counterclockwise to decrease the volume.
Press the Channel Up Switch or the Channel Down Switch until the channel you
3 .
want appears in the Channel Display.
4. Rotate the Squelch Control fully clockwise.
5. Rotate the Squelch Control counterclockwise until all background noise disappears.
For the best operation, leave the Squelch Control in this position. Continuing to
rotate the Squelch Control counterclockwise, results in decreased receiver
sensitivity.
6. Do the following if you want to use the scan feature:
a. Press the Priority Switch if you want to set the priority feature on.
b. Use the Channel Up Switch and the Channel Down Switch to choose a channel.
Press the Lockout Switch to lock the channel out of the scan sequence.
c. Press the Scan Switch to start the scan feature.
Before you transmit, listen for any messages on the channel.
7 .
8. When there is no activity on the channel, press the PTT (Push-to-Talk) switch and
begin transmitting. The Transmit Indicator will light. For the best transmission, hold
the microphone about two inches in front of your mouth. Speak clearly and in a
normal conversational voice.
9. When you finish speaking, immediately release the PTT switch and listen for a reply.
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Operati ng Instructions
SMH 4000
December 1 992