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Reg, G4FGQ wrote:
"If the input impedance is LESS THAN 50 ohms then an unun makes it worse" A transformer can step down as well as step up. Early crystal sets stepped down antenna impedance to the low impedance of the rectifier using a continuously variable autoformer (a sliding contact on a coil). Position was adjusted for best results. Best regards, Richard Harrison, KB5WZI |
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