[ARC5] Arc-5 transmitter rack plugs.

[Ronnie Hull]

We have all done it! No worries!

Sent from Ronnie's IPhone

> On Sep 29, 2014, at 14:20, J Mcvey via ARC5 <arc5 at mailman.qth.net> wrote:
> 
> Thanks for the info. I was aware that the wiring was different, but I was not aware of the plug difference. The rack I have was gutted anyway, which will require total rewiring.
> 
> As it turns out, I was testing for fit with an ARC-5 transmitter, but the ones I am going to use are apparently SCR-274 (silver) and those use the same plug as the ARC receivers. 
> 
> So, I'm OK.. I ASS-U-MEd that they were the same size. I learn something new every day!
> 
> 
> 
> 
> 
> On Monday, September 29, 2014 1:12 PM, Mike Morrow <kk5f at earthlink.net> wrote:
> 
> 
> 
>> ...I was presented with an odd obstacle on my transmitter rack.
>> It seems that the former owner changed the male plugs that interface
>> with the back of the transmitter were changed to the receiver type.
>> Although they look the same, apparently  the OD alignment of the pins
>> is slightly larger for the transmitter receptacle.
> 
> 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  
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