Latest news on my TR4C. I decided to pull the tubes and test them, when I opened the cage (and shorted out the plate with a screwdriver, power off of course) the plate chokes came loose! TWO OF THEM! Like they were not soldered to the circuit! Ah Ha! That must be the problem! But no, I tested all 3 tubes and they all tested good with the same output value on the tester. No shorts, no grid emissions. So I put them back in and re-soldered the chokes. Turned it on, let it warm up and same result. VERY LITTLE power on 10, like 5 watts or so and about 10 on 15. 20 to 80 is OK.?
So... I'll do ANOTHER check of all the band switch fingers to make sure those are all working and check the various components that get switched in on 15 and 10 meters. Does anyone have a LARGE PRINT SCHEMATIC? The copy I found online is terrible!
73, Dave KD5FX
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