schematic for HD 1481

[Kenneth Laine Ketner]

Greetings greenies:

I am doing some antenna experimenting, and need a function like the
Heathkit HD 1481 remote coax switch. Does anyone know of a schematic for
it on the web. Didn’t find one on BAMA.

Lacking a schematic, maybe someone can describe the mode of operation. I
understand it switches a remote box on the tower by sending  12 VDC
pulses along the coax (no extra wires needed for switching). One coax
cable up the tower, and 4 antennas switchable at the tower top box. This
is the kind of function I need. Just what are the details of how it does
that?

--

Ken Ketner
ARS KA5ELD (Extra Class)
  Personal Webpage: http://www.wyttynys.net
  Office Webpage: http://www.pragmaticism.net
Email:
 home: ketner at arisbeassociates.com
 office: kenneth.ketner at ttu.edu

US MAIL
PO Box 65135
Lubbock, TX 79464

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