[Milsurplus] NOS ARR-15 / ARC-2 connectors

[Jim Whartenby]

Seems that K connectors are still in production.
http://www.peigenesis.com/en/itt-cannon-connectors/180:itt-cannon-standard-k.html

Since this style connector was used on the ARB receiver and RL-7 intercom, is it safe to say that this connector was the Navy favorite during WW2?  Besides the ARR-15, the ARB and RL-7 are the only Navy items in the collection, that I can think of, at the moment.Jim

      From: Robert Downs via Milsurplus <milsurplus at mailman.qth.net>
 To: 'B. Smith' <smithab11 at comcast.net>; 'Milsurplus' <milsurplus at mailman.qth.net> 
 Sent: Sunday, June 17, 2018 10:35 PM
 Subject: Re: [Milsurplus] NOS ARR-15 / ARC-2 connectors
   
#yiv4959922404 #yiv4959922404 -- _filtered #yiv4959922404 {font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;} _filtered #yiv4959922404 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv4959922404 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv4959922404 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}#yiv4959922404 #yiv4959922404 p.yiv4959922404MsoNormal, #yiv4959922404 li.yiv4959922404MsoNormal, #yiv4959922404 div.yiv4959922404MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:New;color:black;}#yiv4959922404 a:link, #yiv4959922404 span.yiv4959922404MsoHyperlink {color:blue;text-decoration:underline;}#yiv4959922404 a:visited, #yiv4959922404 span.yiv4959922404MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv4959922404 span.yiv4959922404EmailStyle17 {color:#1F497D;}#yiv4959922404 .yiv4959922404MsoChpDefault {font-size:10.0pt;} _filtered #yiv4959922404 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv4959922404 div.yiv4959922404WordSection1 {}#yiv4959922404 Well, I also did some more looking and actual measurements.  And unfortunately it turns out that the AN, MS, or MIL-C-5015 are not going to be a source for female contacts for making mating connectors for the pins in the connectors on the ARC-2 or ARR-15 radios.  Mike gave the nominal pin diameter as 0.125”.  The #12 pins in the AN are 0.094”  and the next size used is #8, which is about 0.141”.  However, the Cannon K-Series connectors skip from #16 to #10, and the #10 pin averages 0.124”.  Unfortunately, the K-Series aren’t as plentiful as the AN and the #10 contacts, like the #12 in the AN, aren’t that common.  For example, the HV power and control connector for the ATC and AN/ART-13 transmitters and dynamotors, the power and control connector for the TCS transmitter, the power connector for the ARB receiver and ATb transmitter, and several others each have two #10 contacts usually for the +/- 24/28 or 12/14 VDC.   However, anyone caught scrapping eight or ten U-7/U’s will probably get strung up by the thumbs until dead.  So watch out what you rob the contacts from.  J  Not having the rectangular connectors for the ARC-2 or ARR-15, I don’t know how far the male pins stick out and how far down on the males the females will actually go.  So anyone trying to machine the blocks in order to make a mating connector will have to make some careful measurements to see how far to counterbore the female contact holes in the front and rear contact blocks.  And I would suggest that instead of populating all of the holes, populate one at each end plus only the ones that you are going to actually use.  But making the rectangular female contact blocks will be a lot easier than making the circular ones for, for example, a U-7/U.  Robert Downs    Robert Downs  From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Michael Hanz
Sent: Sunday, June 17, 2018 12:24 PM
To: B. Smith; Milsurplus
Subject: Re: [Milsurplus] NOS ARR-15 / ARC-2 connectors  I can share the pin measurements, but it gets a little complicated.  There are actually two connectors in existence - one with a pair of insulating blocks, and one with a single insulating block.  I haven't had time to take apart one with the pair of blocks, but below is a (very) rough sketch of the pin that is used in the .785" thick single block style.  It is designed to accept the .125" diameter male pin in the radio set(s).
Mike  KC4TOSOn 6/17/2018 11:34 AM, B. Smith wrote:
Hi Robert 
What is the source of your insert pins and by chance did you take any pin measurements that you could share with us. 
breck k4che 

On 6/17/2018 12:15 AM, Robert Meadows wrote: 

Just purchase the proper insert pins for pin diameter --readily available 
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