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3CX15000A7
amplifier 3-23 MHz.
25 kW SSB output.
Antenna relays.
Small relay on left
(upside down) is an
RJ-1 relay. Big
relay is 30 amperes
at 15 kV vacuum.
Main inductor.
5/8th inch tubing.
Thick silver plate.
Brazed connections.
Bandswitch 8 inches
in diameter.
Coiled leads fine
tune the inductance.
Silver plated
lead
Not silver plated
yet.
Bias board
RF compartment.
Left, air
pressure
differential cutout.
Turns amp off if
air pressure across
3CX15000 anode goes
below rating.
EIA flange RF
output connector
Small 380-pound
test power
transformer with
lift hooks. Replaced
at site with bigger
three-phase.
Left, RF choke.
3CX15000A7 tube.
Tank coil.
Normal 3 kW size
RF amplifier plate
choke is used for dc
tank safety.
EIA output flange
Meters
Vacuum cap drives
and belt drive for
input.
All of the shafts
and sheet metal are
made here.
Homebrew RF plate
choke. #14 wire.
Homebrew plate
choke supports.
Blocking
capacitor.
Tank.
All homemade
metal.
All welding done
here.
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