-=[ Quoting Cameron Hall to Greg Maclellan ]=-
 -=> Quoting Greg MacLellan to All on 10 Feb 98 11:09pm <=-
 -=> Subj: Re: stereo from mono vcr? <=-
 GM> I know this sounds like a *REALLY* dumb question =) but does/can a mono
 GM> vcr output a stereo signal over the coax output? I don't think there's
 GM> anyway it could for tapes, since the stereo signals are stored totally
 GM> independantly from the mono signal (so a mono vcr won't even touch
 GM> them).
 CH> Tapes will come out in mono, definitly.
 GM> But will the converter in VCRs (or other equiptment) output a stereo
 GM> siganl, even though technically they're 'mono'? I'm not sure how the
 GM> stereo signal is encoded into regular VHF transmissions - i assume it's
 GM> independant of the mono signal, but perhaps not. It would also depend
 CH> Tuners in most mono VCR's demodulate the signal, then re-send it out
 CH> over their outputs.  The converters also don't have the bandwidth to
 CH> pass the complete MTS stereo signal.  It will not decode anyway.  Now,
 CH> as to newer mono VCR's, I don't know.  That would need some
 CH> experimentation. :-)
 GM> on the converter i suppose - if it actually splits everything apart
 GM> (which it might do, in order to generate separate signals for the
 GM> regular audio/video line-outs (RCA plugs) that most VCRs have) and jams
 GM> it back together again, or if it just filters out all the other
 GM> channels execpt the one in question..
 GM> anyways, i dunno if i'm too clear here, but perhaps someone will
 GM> understand me and know ;) thanks
 CH> The MTS encoding employs sub-carriers and dBX noise reduction on those
 CH> sub-carriers.  Those sub-carriers get filtered out on older Mono
 CH> VCR's.
 CH> Hope that helps. :-)
I just had the reverse problem.  I wanted to dupe a tape that's stereo into
mono.  I finally just threw up my hands and ran it through the RF cable.  I
was going to do it with a Y-adapter on the audio in, but I got lazy.
After having a closer look at the VCR, the left channel makes mono when the
right is open.  It doesn't really matter, the RF cable did well enough
for a rush job.
                                Phil
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