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發表於 2020-1-9 09:39:02
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8 hints for tube radio lovers
Mono FM always sounds better than Stereo FM because there is no MPX circuit involved
For a 50 years old radio, most capacitors are off value, usually 5 to 10 capacitors should be replaced
For a 50 years old radio, some resistors are off value, usually 1 or 2 resistors should be replaced
Repair service cost is about HKD3000 on average
Radio tubes have extremely long life and they are cheap to buy
Do not replace radio tubes if you cannot do IF alignment
IF alignment requires special test equipments. Google “IF alignment“
Audio output tube (usually EL84) can be replaced easily and there is no need for alignment
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