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<DIV>Many, probably most, of the Type-A tapes that we receive are hi-band as in
the example that David has shown. However, for those not familiar with the
format, "Hi-Band" in Type-A is not the same as the quad and Type-C
frequencies. It's basically equivalent to LBC in quad.
Actually, Ampex referred to the Type-A modes as "Carrier", so they had
Low-Carrier (as in LBM for quad), High-Carrier (LBC Quad), and then
Very-High-Carrier (same as HBC quad and Type-C). The VHC mode was
introduced to the Type-A format with the VPR-7900. They also moved the
head switching to the vertical interval, and so tapes made in that mode look
very much like Type-C recordings. </DIV>
<DIV> </DIV>
<DIV>Don Norwood<BR>Digitrak Communications, Inc.<BR><A
href="http://www.digitrakcom.com">www.digitrakcom.com</A></DIV>
<DIV> </DIV>
<DIV>----- Original Message ----- </DIV>
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<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=david@dcvideo.com href="mailto:david@dcvideo.com">David
Crosthwait</A> </DIV>Ed,<BR><BR>Here is an OTA recording made in 1974 from a
University in Texas. The record machine was a VR-7800 in high-band. The
receiving antenna was about 40 miles from the transmitter. Off air reception
was not the best via a Conrac vacuum tube tuner. The TV station was
running RCA TK-44A's.
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