Instruction Manual

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power supply has a permanent overload or the supply has failed, it will not reset.
The ALS-600PS uses only the protective fuses.
6.) The ALS-600PS has an RTTY and Normal voltage switch. The RTTY position
allows higher amplifier efficiency at reduced power.
See the power supply details included with the particular power supply for details
specific to each supply.
Radio and Antenna Connections
WARNING: Forcing connector engagement can result in permanent connector
damage. Solder on the outside of center pins or bent pins are primary causes of
female connector damage. External solder or bent center pins can permanently
damage the female.
1.) RF connections are through standard UHF female connectors. Use good cables
with quality UHF male (PL259) connectors. The output cable must safely handle
at least 600 watts.
2.) Look at the connectors. The amplifier‘s female connectors have notches on the
outer thread edge. The cable males should have protruding tabs on the inner
shell beyond the center pin insulator. These tabs and notches prevent unwanted
connector rotation. The male’s tab or tabs must be aligned with the female’s
notches. This interlocking prevents connector rotation.
3.) With a firm handgrip, gradually tighten RF connectors while making sure the male
tab interlocks with the amplifier’s female connector notch. Do not use excessive
force on connectors. Check for proper tightness and seating by wiggling and
flexing the cables near the connector and watching for any indications of
abnormal male connector movement, and by wiggling the cable while hand
tightening the male shell. If done properly, the connector will be solidly locked
without need for pliers or other tools
4.) ALC and Relay (keying) connectors are phono females. The phono males from
external cables should push directly in with a snug fit.
5.) The Relay line has low voltage (<14V) low current (<20 mA). Transmit is enabled
by pulling the Relay line to ground with a relay contact or transistor. Read your
radio manual. Unless you have a very unusual radio, your radio will directly key
the amplifier.
6.) The remote and radio band data connectors are specialized connections. They
are for use with Ameritron supplied cables only.