Icom IC-211 Instruction Manual page 25

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ACC SOCKET CONNECTIONS
FUNCTION
Output from discriminator.
13.8 Volts DC in conjunction with the power switch operation.
Connected to push-to-talk, T/R change-over switch. When grounded, the
set operates in the transmit mode.
Output from the receiver detector stage. Fixed output regardless of AF
output or AF gain.
Output from transmitter MIC amplifier stage.
8 Volts DC available when transmitting. (relay can not be directly actuated.)
Input for external ALC voltage. '
Ground
NC (no connection)
NC (no connection)
NC (no connection)
NC (no connection)
NC (no connection)
NC (no connection)
LOCK Input to lock dial externally.
UDC Input to control Up/Down counter externally.
SCAN Input to scan frequency.
CL Input to clear frequency.
FCL Input to clear counter in specified digit and input for MSB data.
KO Input for frequency control data.
K1 Input for frequency control data.
K2 Input for frequency control data.
K4 Input for frequency control data.
K8 Input for frequency control data.
One of the adapters that can be connected to this socket is the IC-RM2 Computerized
Remote Controller. The IC-RM2 can select frequencies, scan in various steps, memorize and
recall 4 frequencies, all with the touch of a button. It also has a built-in touch tone pad.
You can also select odd splits for repeaters. Many more features are packed into this very
small controller.