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17 Dec
2003
17 Dec
'03
11:17 p.m.
Exactly. So how come mom&pop with a scanner were able to record BOTH sides of the conversation without interruption? This seems pretty suspicious to me.
You typically only need to tune into either the forward or reverse channel. You can usually hear both sides (one may be down a few dB). This is probably a result of acoustic coupling from the speaker into the microphone on one or both ends (could also be near-end hybrid echo). You see the same situation on both cellular and the 49 MHz cordless phones. Eric