Transmitters
Hammarlund PA-500 RF Deck Info - Steve W8TOW
Mods for the BC-610 - Steve - K4HX
Power Improvement for the old No 19 Wireless sets - VE3LYX
DX-60 Enhancements - DMOD
DX-60 Mods from WA7JHZ - Steve - K4HX
DX-35 with Power Control and Improved Audio - DMOD
EHAM article....LDMOS transistors - RolandSWL
80 Watt Class D Transmitter by WA7JHZ - Steve - K4HX
CCS, ICAS, IMS, and IVS ratings - Opcom