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In message , Peter Stickney
writes snip As to the comment from another post in this thread, yes, lip mikes existed, but that theory falls down on two points. If I'm remembering things correctly, you can't just plug one into a system intended for Carbon mikes - As I Seem To Recall, there are impedance matching issues that require some manner of additional circuitry. It wouldn't have been impossible, but I can't imagine the RAF restringing the interphone system on a single Lancaster just to accomodate the Propaganda Campaign. The lip mic would have fed the small mixer unit at the recorder. The a/c intercom would be another input, suitably padded down. The other factor is that lip mikes and Oxygen Masks don't mix. Yes, I imagined WVT using an oxygen mask until he wanted to speak then unclipping, saying his stuff, then clipping back up. d Bomber Command Lancs spent their missions at night up past 18,000', and supplemental Oxygen is necessary t those heights, and very useful at much lower altitudes. (The extra O2 increases night vision). There should be 8 or 9 guys on that airplane, all waring Oxygen masks, and all, at som epoint, talking on the intercom, with the mask microphones. We ought to hear _somebody_ breathing, dagnabbit! Was it common practice to stay switched off until you wanted to say something? In my recording, there is no breathing audible. Everyone was 'off' until speaking. Mike -- M.J.Powell |
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