Ameritron Upgrade Boards
Part Number F56-4500
This board is a superior direct drop replacement for the 50-01143-1 Ameritron AL-1200, AL-1500, and AL-82 filter capacitor board. The continuous voltage rating of the board is 4500 Vdc!
Before you buy a different cheaper board consider:
1.) This board exceeds accepted leakage path lengths of 0.1 inch per 1,000 volts for voltage gradients across any point on the board, including trace to trace voltages and voltages to mounting holes. Many boards do not do this, and are subject to long term failure from carbon tracking.
2.) The resistors in this board are high reliability. They are operated safely below voltage breakdown.
The ten 450Vdc capacitors in this board are special long life high current capacitors. The capacitors are rated at 5000 hours @ 105c with 1.98 ampere ripple current. The bleeders are 1% high reliability military grade resistors.
This fully tested board is superior to any other board on the market. This board was designed by W8JI, the original AL-1200, AL-82, AL-1500 series amplifier designer the way this board would have been made without cost restraints.
This drop in AL1200 AL82 AL1500 board has exceptionally long arc paths. The circuit board is a high quality USA manufactured board solder mask coated board. The ten high temperature long life rated electrolytics alone cost over $150 wholesale at last check!
This board is universal. It will never go obsolete, any standard size capacitor with either screw terminals or solder tabs will fit.
56 uF at 4500 Vdc
4 megohm metering
350 amp surge clamped rail
7.5 inches long, 3.750 inches deep, 3.75 inches of vertical space.
$269 plus shipping.
I also have improved relay, rectifier, and other Ameritron boards.
$28.00 plus shipping
Heavy duty NEW Ameritron AL1200, AL1500, AL82, AL80A replacement antenna relay. Gold plated contacts. This relay fits other brands and models of amplifiers using 12 volt dc coils.
$68 plus shipping.