Icom IC-F21S service manual Connection, DC power cable connections, OPC-478

Connection

Standard signal generator to the antenna connector	to [MIC]
0.1 V to 32 mV	Audio generator
(—127 dBm to —17 dBm)

CAUTION:

DO NOT transmit while an SSG is connected to the antenna connector.

to an RS-232C port
	Personal
OPC-478	computer

FM

deviation meter

Attenuator

40 dB or 50 dB

RF power meter 0.1—10 W/50 ‰

Frequency

counter

DB9 female plug

(incl. level converter circuit)

to [SP]

SINAD meter JIG cable

Speaker (8 ‰)

DC power cable connections

+

DC POWER

SUPPLY

GND

Battery type detector

NOTE: When you adjust the output power (high power), the battery type detector must be con- nected to GND (see illustration at above). Ohterwise the transceiver does not transmit high power, the output power will be low.

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