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BFO is Beat Frequency Oscillator. You can pick up hams on sideband-those funny, distorted "Donald Duck" sounding guys- & copy Morse code better w/it. I have 2 tube T/Os- one was NASTY w/nicotine when I got it, a couple sessions w/Windex took care of that, & then a couple coats of black shoe polish got it lookin' like it did back in the days of poodle skirts & wraparound windshields...
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Benevolent Despot
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