[ARC5] Arc-5 transmitter rack plugs.

[D. Platt]

Mike is correct, of course.  But... if you're going to modify and 
re-wire an ARC-5 rack to accommodate an SCR-274-N transmitter, it 
appears I have a spare 7-pin connector that will do it.  Now, what I do 
not know is if the connector will actually mount properly in the Navy 
rack.  I suspect there will be a difficulty owing to the diameter of the 
original connector.  All my TX stuff is 274-N so I can't readily measure 
anything.  Others, here, will certainly know.

Jeep - K3HVG

I can tell from your sparse description, but it sounds like you are:

1.  Trying to install a AN/ARC-5 transmitter in a SCR-274-N or ATA rack.

OR

2.  Trying to install a SCR-274-N or ATA transmitter in an AN/ARC-5 rack.

STOP RIGHT THERE!!!

The circle of pin arrangement on the AN/ARC-5 transmitter and rack connectors
is significantly larger than that for the ATA and SCR-274-N.  The wiring to
the pins are grossly different as well.

Different connectors are used throughout the AN/ARC-5 transmitter system,
because the ONLY TWO COMPONENTS in the AN/ARC-5 transmitter system that are
electrically interchaneable with equivalent components in the ATA or SCR-274-N
system are the DYNAMOTOR and the ANTENNA RELAY.  This is pointed out in many
places, such as the article at http://en.wikipedia.org/wiki/AN/ARC-5 .

Mike / KK5F