EF Johnson Thunderbolt - RT's Radio Home Page
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High Voltage
Bitten By the Radio Bug
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Vintage Transmitters
Acknowlegement
EF Johnson Viking Valiant
EF Johnson Viking 500 #1
EF Johnson Viking 500 #2
EF Johnson Thunderbolt
EF Johnson Audio Amp
EF Johnson Ranger I
EF Johnson Ranger II
Collins 32-V2 (#1)
Gonset GSB-100
The Chernobyl Resistor
EFJ Viking 500 Power Supply
Vintage Receivers
Collins 75A-4
Collins 51J-4
National NC-303
R 390A
SP-600 JX 17
SP-600 JX-26 #1
Hammarlund HQ-129x
Field Day
Field Day
Field Day 2023
Micellaneous Tube Projects
Allied Radio "Knight KM15" Monoblock Amplifier
Allied Radio Signal Tracer
E.F. Johnson Restoration
Johnson Paint
Ranger I Meter
Indicators for knobs
Johnson Meter Compatibility
Cleaning Painted Surfaces
The VFO
Test Equipment
Test Equipment
British Iron
Vincent Black Shadow
Vincent Rapide
Norton Commando
1982 Triumph Bonneville
Mikuni Carburetors??
Triumph Tiger Cub
Contact
Contact
EF Johnson Thunderbolt
Amateur Radio > Vintage Transmitters
T
he Viking Thunderbolt Amplifier runs a pair of 4-400A's.
It is currently untested and is a future project..
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