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I don't recall why or how, but the A-B channel is of lower bandwidth, or otherwise more likely to drop out. Hence when you're starting to lose FM, you may find
by phkahler 4y ago
I don't recall why or how, but the A-B channel is of lower bandwidth, or otherwise more likely to drop out. Hence when you're starting to lose FM, you may find it dropping to mono.
- timmg 4y agoI think the reason is less interesting: when you start to go out of range, your radio thinks there is only a mono signal, so it switches to mono mode. Same reason "static" on your TV is black and white. Your TV didn't detect a color signal, so it is looking for the black and white one. (For anyone old enough to remember static on their tv :)