Uniden PRO 500D - Manual (Page 4)

Ooeration
Operating Procedure to Receive
1. Be sure that the power source, antennaandmicrophoneareproperlyconnect-
ed.
2. Turn the unit on by rotating the volume control clockwise.
3. Set the channel selector switch to the desired channel.
4. Set the volume control to a comfortable listening level.
5. Listen to the background noise from the speaker. Turn the squelch control
clockwise until the noise disappears (no signal should be present). Leave the
control at this setting. The squelch is now properly set. The receiver will re­
main quiet until a signal is actually received. Do not advance the control too
far, or some weaker signals will not be heard.
Operating Procedure to Transmit
1. Be sure the operator has read and understands D.O.C. rules and regulations
prior to operating the transmitter.
2. Select the desired channel for transmission.
3. If the channel is clear, depress the push-to-talk switch on the side of the micro­
phone and speak in a normal voice.
CAUTION: The transceiver Voltage Standing Wave Ratio (V.S.W.R.J measure­
ment must be performed prior to the use of the transmitter. A “V.S.W.R." ratio in
excess of 2;1 may damage the transmitter. Please check your SWR reading fre­
quently by using an SWR meter.
Preventative Maintenance
At six to twelve month intervals, the following system checks should be made;
1. Check the Voltage Standing Wave Ratio (V.S.W.R.)
2. Inspect all electrical connections.
3. Inspect antenna coaxial cable for wear.
4. Inspect all screws and other mounting hardware.