User's Manual

10
SEND, TX GND etc.) of the transceiver. Electrical conditions
are 12 V DC of open voltage at receive mode (RX), and short
current of 35 mA at transmit mode (TX).
⑫ALC RCA Jack for ALC Voltage Output. Negative DC voltage
appears at the center pin, which is fed back to the ALC terminal
of the transceiver. ALC is used to keep the amplifier output
power at certain limits. Also it is useful when the transceiver
output power is higher than 100 W (See page 16, Section 9.
ALC Connection). Also consult your HF transceiver€ 31s user
manual.
⑬FAN POWER Socket to connect DC cord plug of the cooling fan.
6-C Top View
Front Panel Side
Interlock
Switch
for AC Mains
Cooling Fan
Output Low Pass Filter
Terminal for
Primary Winding Taps
Power Transformer
Rectifier
RF Power
Amp
and Heat SInk