[Boatanchors] One Tube QSK Box (maybe called the "imp", Handbook, 1964)

[Bill Acito W1PA]

Yep, that sounds like it. I missed out on all the fun of flicking
switches back and forth. :-)

I am surprised that here is not more references to these on the web. Why
weren't they more popular, considering that they effectively gave full
QSK in a separate  TX, RX situation?
RX insertion loss? Cost? Maximum power handling?

Bill
w1pa


----- Original Message -----
From: "Freeberg, Scott (STP)" <Scott.Freeberg@guidant.com>
To: "Bill Acito W1PA" <w1pa@hotmail.com>; <boatanchors@mailman.qth.net>
Sent: Wednesday, October 30, 2002 4:13 PM
Subject: RE: [Boatanchors] One Tube QSK Box (maybe called the "imp",
Handbook, 1964)


Sounds like a tube TR switch like the Johnson TR switch.  While I never
used one, but have one, I believe the transmitter is left in transmit
mode all the time.  The TR switch detects rf and blocks rf from getting
to the receiver and mutes it.  73, Scott WA9WFA