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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 rev1 (pdf format)
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
TOF Install AL82 AL1200
Our Kits and Products
Kenwood X54-1300-10 pdf
SB200 Heathkit Relay Buffer Install and URB200BMK
AL80B, AL572, AL800, and AL800H Factory Error Correction Kit
Fan Mod AL811 AL811H (Rev 1) PDF file
Fan Mod AL811 and AL811H(Rev0) word doc
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 F33 Filter capacitor board install (old)
AL1200 AL82 AL1500 F33/F54 PDF file instructions (latest)
HV TESTER Instructions
TOF Installation current files (Aug 1, 2022)
Vacuum Tube Operation
(we sell vacuum tubes)
Designing Thoriated Tungsten Filaments
EIMAC CPI FILAMENT LIFE MANAGEMENT
Thoriated Tungsten Filament Operation