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SB200 Heathkit and Collins 30L-1 Bias System Improvements (word)
SB200 Heathkit and Collins 30L-1 Bias System Improvements (pdf format)
SB200 Heathkit Collins 30L-1 Arc and Fault Protection rev2 (pdf format) updated 10 May 2023
Ameritron AL572 Amplifier Factory Error Corrections for relay system and reliability (pdf format)
AL80B, AL572, AL800, AL800H relay timing, bias, and arc protection mods (pdf format)
Bandswitch wiring and replacement (pdf format)
Ameritron GOP and Timer Overload
Our Kits and Products
AL80B, AL572, AL800, and AL800H Factory Error Correction Kit
Fan Mod AL811 AL811H (Rev 1) PDF file
Relay Installation OEM Style Ameritron AL80, AL80A, AL1200, AL1500, AL82 and SB-1000 Heathkit
AL811 and AL811H Upgrade Kit Manual (Rev2) Updated AUGUST 2022
AL811 AL811H TPS3 TPS4 parasitic suppressor upgrade instructions pdf file
AL1500 and QSK Filter Capacitor Additional Instructions (old)
AL1200 AL1500 AL82 Step Start
AL1200 AL1500 AL82 F33 Filter capacitor board install (old)
AL1200 AL82 AL1500 F33/F54 PDF file instructions (latest)
Dentron Clipperton Choke and Suppressor Installation Manual link pdf file
Heathkit SB200 Heathkit Relay Buffer Install and URB200BMK
Heathkit SB200 SB220 Relay Installation Heathkit K1 69-55 relay, Heathkit 69-5 relay Install
HV TESTER Instructions
Kenwood X54-1300-10 pdf
TOF Installation current files (Aug 1, 2022)
TOF Install AL82 AL1200
UNSS (soft-start step-start) Generic Installation
Vacuum Tube and Amplifier Operation
(we sell vacuum tubes)