[Milsurplus] Re: [ARC5] R-27 Autotuned

[Taigh Ramey]

Sorry I have been out of touch lately as I have been traveling a lot.

I have a report on the Yardney tuner that I found at National Archives. I am
trying to post it on my web site but I am having some technical problems at
the moment. It is a 4MB PDF file that I could probably e-mail to you if you
like.

You can see one photo of the Yardney installation in a TBM-1C on my radio
page at:

http://www.twinbeech.com/radio.htm

Thanks,
Taigh
 
Taigh Ramey
Proprietor, Vintage Aircraft
7432 C.E.Dixon Street
Stockton, California 95206
(209) 982-0273
(209) 982-4832 Fax
www.twinbeech.com
KEEP 'EM FLYING...FOR HISTORY!
 

-----Original Message-----
From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
Behalf Of jcoward5452 at aol.com
Sent: Sunday, September 16, 2007 11:43 AM
To: kongomt at gmail.com; milsurplus at mailman.qth.net; arc5 at mailman.qth.net
Subject: Re: [Milsurplus] Re: [ARC5] R-27 Autotuned


Hi All,
 I found some useful info.

  1)  Pages 4-5 thru 4-7 of CoNavAer 08-1-505 AIRBORNE MAINTENANCE NOTES 
 AN/ARC-5
     " Automatic Tuning System for Medium Frequency AN/ARC-5 Receivers"
I don't know how or from whom I got these copied pages, but they turned 
up in my not so organized collection of lit.

   2) I remembered Taigh Ramey's comments regarding the spot tuner so I 
went to WWW.TWINBEACH.COM and there is a report From the Chief of the 
Bureau of Aeronatics "TBM-1c-Flight Test of C131/AR Yardney Automatic 
Selector Mechanism".This report has pictures and shows the modified 
control box very nicely.The cover letter indicates there should be 1 
drawing and 2 photes but the drawing is not  on the web site.

 Regards,
             Jay KE6PPF


-----Original Message-----
From: Michael Tauson <kongomt at gmail.com>
To: milsurplus at mailman.qth.net
Sent: Sun, 16 Sep 2007 10:22 am
Subject: Re: [Milsurplus] Re: [ARC5] R-27 Autotuned



On 9/16/07, telegrapher at att.net <telegrapher at att.net> wrote:

> I had an R-XX receiver here that was modified for the tuner but i 
don't
> recall any connector for external wiring.  Hmmmmm.  Maybe my instant
> recall isn't functioning as i think it should.  Michael!

Yes?

There is a 17 position Cannon connector on the C-131, for which Robert
provided me a mating plug.  This is all shown in AN 08-35C131-2 rather
nicely.  14 pins are used for the channel selection, one for ground
and two for power.

This switching is independent of the channel select switching for the
ART-13 which makes things a bit more complicated than necessary, but I
didn't design the thing.

BEst regards,

Michael, WH7HG
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