Icom IC-22S Instruction Manual page 7

Icom IC-22S PLL Synthesized 2-Meter Transceiver
Instruction Manual and Service Notes
SECTION IV.
Control Functions
High-Off-Low Switch
Opens or closes the 12 VDC source voltage to the transceiver. "In High" position, output
power is 10 watts. "In Low" position, output power is 1 watt.
DPXA — SPX — DPXB
This determines whether the transceiver transmits or receives on the program frequency, or
+600KHz above the program frequency.
Volume Control
Controls audio output level of the receiver.
Squelch Control
Controls the squelch threshold point of the receiver.
Microphone Jack
Accepts 4 prong mike plug supplied on microphone.
S/RF Meter
Reads S signal strength in receive mode and relative RF output in transmit mode. The meter
face is illuminated with a white lamp when the transceiver is switched on.
Channel Selector
Selects one of 22 channels.
C.O.S. lamp
Also shows out of lock in transmit.
Transmit Indicator
Antenna Connector
Accepts standard PL-259 coaxial connector. Note that some transceivers may come with a
metric threaded connector. Most PL-259 connectors will mate sat isfactorily if care is taken
to seat them properly. If you have difficulty, try a different make of PL-259.
External Speaker Jack
This jack mates with the plug supplied for external 8-ohm speaker or headset use. The use
of this jack mutes the internal speaker.
Power Cord
Mates with DC cord plug or power cord of IC-3P AC power supply.
Identification Plate
States model, serial number.
Accessory Socket
Center Meter, etc., can be connected with a 9 Pin plug.
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