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#5
February 21st 08, 09:22 PM
posted to rec.radio.amateur.boatanchors
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Hum on AM HF receiver
Are you sure the hum isn't real? A lot of solid state
devices trash up the power line. Rectifiers are a big source, lamp dimmers and fluorescent lamps are another. Barring that, look for heater cathode shorts from the detector tube back to the power amplifier tube. -Chuck Antonio Vernucci wrote: You sure the power supply filter caps are good? Please read my self-reply. Tony I0JX |
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