HELP: WhazIt? TR switch?
jgantner at MINDSPRING.COM
Mon Apr 3 21:35:36 EDT 2000
It's a receiver preamp made by Dow-Key. I used one in front of my Knight
It was a great tutorial in cross-modulation.
From: Boat Anchor Owners and Collectors List
[mailto:BOATANCHORS at LISTSERV.TEMPE.GOV]On Behalf Of Ian Webb
Sent: Monday, April 03, 2000 8:02 PM
To: BOATANCHORS at LISTSERV.TEMPE.GOV
Subject: HELP: WhazIt? TR switch?
Along with some other equipment I acquired what I believe to be a
1950s, early 1960s TR switch.
I recognize the power supply it's attached to as a modified AMECO
unit. I can't remember the details of the unit in the foreground of
this picture which I believe is a TR switch. I also seem to remember
it being late 1950s to early 1960s vintage.
Take a look at:
Anybody with a better memory than mine?
Who made it? (Johnson???)
What does it do? ("isolate" the receiver from the antenna??? or??)
How does it fasten into the antenna system?
I probably won't ever use it but would like to know more about it
before I make that decision. If I know the years when it was sold I
can go to the library and try to find an ad or article in and old QST
k6sde at my-deja.com
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