[Qcwa] Memory Lane !!
Jeffrey D Angus
[email protected]
Fri, 10 May 2002 12:48:56 -0700
[email protected] wrote:
>Everyone on this reflector
>remembers wire photos, and RCA and Western Electric had that industry tied
>u[p for years in the 1930s and 40s.
>
Back in the early 70's while I was working at TRW in Redondo Beach,
I cruised up to J.J. Glass in Los Angeles and picked up several Western
Union FAX machines. They used a synchronized rotating drum to send
and receive. The transmitter looked at the scan spot and modulated a
tone (AM) with the "gray scale" intensity. The receiver decoded the
tone output and coupled a "contact wiper" with the paper from the
plate of a 6V6 (I think) and literally burned the paper with the image.
It was great fun, first over the phone line with a pair of phone patch
couplers sending images back and forth with a buddy of mine out of
a Mad Magazine "Don Martin Steps Out" paper back book. Then
switching over and sending them back and forth over 40 meters.
Our next hair ball scheme revolved around a pair of OLD turret
type TV cameras and a couple of even older RCA "suitcase"
mobile UHF radio units.
Jeff
wa6fwi
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety." Benjamin Franklin