Uniden UH-O53 - Manual (Page 9)

Operation
Note: Before operating the UH-053 for the
first time, make sure you have fully
charged the battery.
1. Turn the UH-053 on by rotating the
On-OflA/olume Control clockwise until you
hear a click.
2. Adjust the Volume Control to a comfortable
level.
3. Turn the Squelch Control fully counter­
clockwise. You will hear background noise,
and the BUSY Indicator will light. Turn the
Squelch Control just until the background
noise disappears and the BUSY Indicator
goes out. At this setting, the received signal
must be strong enough (>0,25pV) to break
squelch and be heard,
4. If the channel is clear, the BUSY Indicator will
be out, (If the BUSY Indicator is lit, the
channel is busy. Wait until the light goes out
before you begin transmitting.) Press the PTT
Switch to transmit. The TX Indicator lights to
indicate you are transmitting. Hold the built-in
microphone (or optional Spe^er/Microphone)
approximately two inches from your mouth
and speak dearly in a normal voice.
5. When you are through speaking, release the
PTT switch and listen for a reply. (The TX
Indicator goes out.)
6. When you are finished using the radio, be
sure to turn it off to conserve battery power.
Simplex/Duplex Communication
Duplex Operation allows the Sundowner
UH-053 to operate via a repeater station on
Channels 1 through 8. The set receives on these
channels but transmits 750 kHz higher than the
receiver frequency.
When the Simplex/Duplex switch is set to
Simplex position, the set receives and transmits
on the same channel. (Simplex Communication)
To use Duplex operation on a Channel where
Repeater Service is available, set the
Simplex/Duplex selector switch to "Duplex".
To put the Duplex channel back to normal
Simplex operation, set the Simplex/Duplex
Selector switch to "Simplex".
UH-053