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For now I am running off my dc power supply. So I think I have found the issue with wattage fading as the radio stays keyed up. The final starts out fine voltage wise but quickly fades down to basically zero. The driver seems to stay ok.

so I replaced the final. I’m not getting anything at the emitter. It should be about 5 volts in AM TX but there’s nothing. So there is no power output obviously. What the heck could be keeping that from putting anything out. There is .about 0.6 volts coming in as spec so why would there be nothing at the emitter?

[QUOTE="Brian G, post: 756432, member: 60108"] For now I am running off my dc power supply. So I think I have found the issue with wattage fading as the radio stays keyed up. The final starts out fine voltage wise but quickly fades down to basically zero. The driver seems to stay ok. so I replaced the final. I’m not getting anything at the emitter. It should be about 5 volts in AM TX but there’s nothing. So there is no power output obviously. What the heck could be keeping that from putting anything out. There is .about 0.6 volts coming in as spec so why would there be nothing at the emitter? [/QUOTE]

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