16
Amplifier Rear Panel
Figure 6 Amplifier Back Panel
POWER INPUT
The power supply should be unplugged before installing or
removing this connector. This connector is indexed by a slight
vertical offset in the two round index pins. Mate the round
pins and holes. Seat the male plug fully onto the amplifier rear
panel male connector pins. After seating, the power supply
can be plugged into the AC mains outlet.
ALC
Optional connection. Connects to radio ALC input.
RELAY
Connect to radio amplifier keying line. Radio must pull this
line below 2 volts to transmit.
KEY LOOP
Output for remote tuner use.
KEY LOOP Switch
Switch to turn on and off the KEY LOOP function.
GND
Connect to station ground bus, if available. This connection is
primarily for extra safety.
RF IN
Connect through good 50-ohm coaxial cable of any
reasonable length to radio’s antenna output connector. This
can be a smaller cable, such as RG-58/U.
RF OUT
To 50-ohm antenna, antenna tuner, power meter. This is the
high power output. 50-ohm coaxial cable and system beyond
must safely handle at least 1200 watts.
RADIO INTERFACE
This connector is for use with
Ameritron
radio interface
cables. It allows automatic band selection (following the
radio). It also provides amplifier actuation in transmit mode
with some radios.
Summary of Contents for ALS-1406/S
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