I have a Harvey-Wells AR-10 aircraft receiver with manual which was developed in 1943.  The manual calls the flex cable a "tuning control tachometer shaft" that is similar to the S.S. White L-150.  

Sure enough, S.S. White is still in business.  They patented the flex cable back in 1875 and still make them! 
Regards,
Jim
Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy


-----Original Message-----
From: boeing377@gmail.com
To: Hubert Miller <Kargo_cult@msn.com>
Cc: ARC-5 List <arc5@mailman.qth.net>; milsurplus@mailman.qth.net <milsurplus@mailman.qth.net>
Sent: Mon, Apr 3, 2023 12:27 am
Subject: Re: [Milsurplus] What is this flex cable for ?

Don’t forget ARN 7.  Near twin of BC 433 SCR 269 

On Sun, Apr 2, 2023 at 3:00 PM Hubert Miller <Kargo_cult@msn.com> wrote:
Which radio is this flex cable for?  Ebay item:
 
WWII Aircraft 26” Flexible Conduit & Inner Tuning Shaft Radio Compass
 
 
Text says unused, $45, also a suggested use: you can cut off the ends and use as flexible conduit. Cool !
-Hue Miller