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How to repair EF Johnson challenger Ham transmitter shorted high voltage

D-lab Electronics

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How to repair EF Johnson challenger Ham transmitter shorted high voltage

6 211 просмотров · 6 л. назад
D-lab Electronics
84,8 тыс. подписчиков
6 211 просмотров · 6 л. назад
Johnson Challenger with a shorted capacitor. Made a mess. Tracing down the fault was pretty easy. Just follow the smoke trail! The Challenger was a unique rig. The finals and driver tubes are 6DQ6A's. Sweep tubes normally seen in CB Linear amplifiers. This is a real power house and sounds decent on AM. Just a quick project to show you the damage.