Uniden SUNDOWNER UH-011 Owner's Manual page 6

1.
PRESS- TO- TALK MICROPHONE: The receive and transmit are controlled by the
PRESS- TO-TALK switch on the microphone. Press the switch on the microphone to
activate the transmitter; release the switch to receive. When transmitting, hold the
microphone two inches from the mouth and speak clearly in a normal voice. The mic-
rophone provided with your radio is detachable Iow impedance dynamic type.
2.
TONE CALL SWITCH: This switch is reserved for optional SELCALL operation.
Push the T. CALL switch, (when this action is taken, TX indicator will flash), then,
TONE SIGNAL will be generated and it opens the Squelch of the other units which
have the same tone squelch function.
3.
TONE SQUELCH SWITCH: This switch is reserved for optional SELCALL operation.
Push the T.SQ switch while receiving the TONE SIGNAL. Then, the Circuit of the
SQUELCH is automatically opened.
4.
S-INDICA TOR: The signal indicator will illuminate to monitor the relative strength
of the signal.
5.
TX INDICATOR: This LED indicates red while transmitting.
6.
RX INDICATOR: Lights during the receive mode whenever a station is being re-
ceived, or whenever the SQUELCH control is adjusted fully counter clockwise.
7.
TONE CALL INDICATOR: When a SELCALL module is installed: While receiving
TONE SIGNAL, this LED will be on.
8.
DUPLEX INDICATOR: When the channel indicated by the CHANNEL INDICATOR
and Duplex memory is programmed, this LED is turned on.
9.
CHANNEL INDICATOR: LED indicates the channel number in use.
10. FRONT MICROPHONESOCKET
11. OFF/VOLUME CONTROL: Turn clockwise to apply power to the radio and to set the
audio volume to the desired listening level. Turn fully counterclockwise to turn the
radio OFF.
12. SQUELCH CONTROL: This SQUELCH Control is rotated to cut off or eliminates
received background noise in the absence of an incoming signal. For maximum re-
ceive sensitivity, it is desired that the control be rotated only to this point where the re-
ceive background noise or ambient background noise is eliminated. Turn the control
fully counterclockwise, then slowly rotate clockwise until ~he receive noise disap-
pears. Any signal to be heard must now be slightly stronger than the average re-
ceived noise. Further clockwise rotation will increase the threshold level which a
signal must overcome in order to be heard. Only strong signals will be heard at the
maximum clockwise setting.