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Posted by Steve Guidry on 02/06/07 00:11
I've seen them before. The magnet isn't that big, really. I guess the
coercivity of VHS is less than 3/4".
But I didn't try it on fast forward . . .
--
Steve Guidry
Video Works, Inc.
1.800.844.4404
www.videoworksinc.com
"Martin Heffels" <goofie@flikken.net> wrote in message
news:m9cfs2lvpg86t3aqeqc0gci4968katcme0@4ax.com...
> On Mon, 05 Feb 2007 20:10:08 GMT, "Steve Guidry"
> <steveguidry1@earthlink.net> wrote:
>
>>"one-use" VHS cassetes do in fact, exist. There's a magnet inside the
>>case on teh takeup reel side, and the tape is erased as it exits the
>>scanner.
>
> It has to be a really big strong magnet then, because one which will fit
> in
> the case, won't really convincingly erase the tape.
> At a small local tv-station where I used to work before, we bought a bunch
> of second-hand U-Matic tapes (used once). If you FF'd them, you could see
> the contents, while on normal speed it looked like noise.
>
> -m-
> --
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