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From: brown@nicmad.UUCP
Newsgroups: net.video
Subject: Re: stereo broadcasts
Message-ID: <527@nicmad.UUCP>
Date: Fri, 24-Jan-86 10:56:10 EST
Article-I.D.: nicmad.527
Posted: Fri Jan 24 10:56:10 1986
Date-Received: Sun, 26-Jan-86 05:02:36 EST
References: <2757@sunybcs.UUCP>
Reply-To: brown@nicmad.UUCP (Mr. Video)
Organization: Nicolet Instrument Corp. Madison WI
Lines: 47

In article <2757@sunybcs.UUCP> ugthomas@gort.UUCP (Timothy Thomas) writes:
>
>I was thinking of buying the stereo tv receiver from radio shack (instead
>of buying a whole new T.V.).  I have cable, so the easiest way to hook
>it up would be to run cable from the remote tuner to it (so the stereo
>tv receiver would always be tuned to Ch. 3).
>Would this work?  Would the tuner convert the stereo signals from other
>stations to stereo on Ch. 3?

No.  Home (consumer) tuners change the incomming RF signals to baseband
signals.  That is done so that video and audio outputs can be supplied.
That signal is then converted to RF, ie, channel 3 or 4.  The MTS signal
will be lost.  Even if it was a MTS tuner (which you don't have, or
you wouldn't be asking this question), the RF output would still be mono.
I haven't seen any consumer device with MTS encoder included.

You will have to hook up the cable directly to the Radio Shack unit.  The
Radiso Shack unit has both in and out F-59 connectors, so it can be hooked
up first, then a cable can be connected to the other tuner.

I have the same Radio Shack tuner.  The tuner does not have tuning capacity
for cable channels.  It is normal TV channels only, ie, VHF 2-13 and UHF.
If your cable company has any MTS tv stations on any other channel, you will
not get it with this unit.  But, you can if you get a VHF to UHF up-converter.
That will move all cable channels to UHF, which the Radio Shack unit can do.

>Also (i know this will probably be different with many cable companies,
>but...) do cable companies that broadcast station in FM simulcast (e.g. MTV,
>Movie Channel, etc..) also broadcast them in stereo for the radio shack
>device to pick up?

Most cable companies have not gone through the expense to add MTS encoding
to the channels they have in stereo on the FM band.  Also, most pay channels
that use scrambling, will probably never be able to have MTS encoding.  The
syncronization signal to reconstruct the horizontal sync is, normally, an
AM modulated sine-wave.  That sine-wave is modulated on the sound carrier,
right were the new MTS signals are contained.  I have seen reports where
tests have been done and some distortion was added to the stereo MTS signal
and other tests where it didn't.  So, we will have to wait and see what
happens in the pay cable area.
-- 

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