[Milsurplus] ART 13 change over relay

[jcoward5452 at aol.com]

Hi Greg,
  There is a pair of contacts on the antenna relay brought out to the 
power connector to be used to mute the receiver on transmit.There 
should also be a binding post labeled "receiver" for the receiver 
antenna connection.For LF work there were various external boxes and 
big knife switches that tuned and transferred the antenna to the 
trailing wire. I think the CU-32 combined tuning and transfer into one 
box.
  When I first applied power to my first ART-13 it scared the heck out 
of me as all the autotuners started up with a lot of noise and 
clatter!But it is quite an impressive set to see working properly.
 Jay KE6PPF


-----Original Message-----
From: Greg Mijal <bluebirdtele at embarqmail.com>
To: milsurplus at mailman.qth.net
Sent: Sat, Oct 31, 2009 7:06 am
Subject: [Milsurplus] ART 13 change over relay



Hi:
My Shelby Hamfest  acquired ART 13  is close to completion.  My home 
made power
supply is huge and heavy but can do the job.
My question is: what is the tradional way to flip the antenna from the
transmitter to the receiver and vice versa?  My guess is to use a relay 
wired to
the primary of the plate supply transformer to control an antenna relay 
and mute
contacts.  Is that about right?  The mating receiver will be a HQ 170, 
R 388 or
possibly a Heathkit Mohawk.
How did Uncle Sam do it in an aircraft back in the bad old days?
Thanks
Greg
WA7LYO
Kinston NC
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