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How Reel-to-Reel Video Recorders Work
//www.thegeekgroup.org - Chris and Kidwell investigate and old Sony Reel to Reel VTR. They explore the different parts, figure how to load the tape, and ...
User Comments
allan fulton
commented
on 10 Mar 2016
Is there ever a lot of wasted tape starting one of these up.
D.E. Bunker
commented
on 12 Mar 2016
+allan fulton The head of a tape is probably sacrifical, like leader on a film print. Rewind tends to beat up the header and damage slowly creeps up the tape. I wonder whether a splice would pass through the machine without damaging something. So compared to what is recorded, tape stock is very cheap.
Philip vB
commented
on 03 Aug 2015
//www.youtube.com/watch?v=TEdGo1eGYEw&t=9m37s Isn't the linear audio
track on a VCR only mono? When the 4 Head VCRs came they started writing
the audio track into the diagonal video track as well, but kept the mono
linear audio track for compatibility reasons.
Philip vB
commented
on 25 Jan 2016
Thanks for that, didn't know that one...
LectronCircuits
commented
on 25 Jan 2016
+Philip vB That's generally true with VHS, although some VHS machines are stereo on linear tracks.
Nick sargente
commented
on 14 Jun 2015
Believe it or not, standard VHS tape only has a single mono audio track.
SVHS has "HiFi" Stereo on the helical data. One of the features of SVHS was
increased bandwidth due to better formulations. They encoded the audio
subcarrier into the helical strip itself but left the mono audio carrier
for reverse compatibility. It's really neat.
LectronCircuits
commented
on 25 Jan 2016
+Nick sargente That's generally true with VHS, although some VHS machines are stereo on linear tracks.
James Laidler
commented
on 06 Jul 2015
+Nick sargente S-VHS used a 6 head recording system, though incompatible with 4-head jobs, could play regular VHS tapes. Standard tapes made for regular 4-head jobs still had a HI-FI stereo track. Look at the spine of any old film and you'll see that listed in the information on the back. I should know, I grew up with the things.
tjperez69
commented
on 19 Jun 2015
+Nick sargente There are tapes with stereo linear tracks, I use to have one but it didn't sound very good, especially when playing SLP.
MurrTV
commented
on 15 Sep 2014
The scanner has the record/play head and the erase head. The third "head"
is called a dummy head, it doesn't do anything and it's only there for
balance. Audio, control track and linear time code is recorded on a
stationary stack heads. Control track is not really time code, it's more
like sprockets on motion picture film. The control track is what lines the
scanner play head up to the recorded video track. Some machines also record
vertical interval time code, which is laid down with on the video track.
VITC time code can be read at slow speeds or even when the machine is in
still mode, longitudinal time code, like audio, can only be read at speed.
Gert Brink Nielsen
commented
on 24 Mar 2016
+MurrTV Yeah i was thinking the third "head" was for mechanical balance as well.
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