SW BC amp
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.
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.
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.
Normal 3 kW size RF amplifier plate choke is used for dc tank safety.
EIA output flange
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.
All homemade metal.
All welding done here.