The 14V and 28V electric remote tuning motors are covered in AN 16-30ARR2-2, the final  Maintenance Manual on the AN/ARR-2, -2X, -2A and -2AX.  Unfortunately, as  Eugene already said, there isn’t much that you can actually do with the AN/ARR-2*.

Robert Downs

From: [email protected] [mailto:[email protected]] On Behalf Of W2HX
Sent: Thursday, May 5, 2022 16:15
To: Hubert Miller; ARC-5 List; [email protected]
Subject: Re: [Milsurplus] Motor tuned ARR-2 ?

I saw that too! Very nice little package. Too bad its not more useful. But very nice

73 Eugene W2HX

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From: [email protected] <[email protected]> On Behalf Of Hubert Miller
Sent: Thursday, May 5, 2022 5:07 PM
To: ARC-5 List <[email protected]>; [email protected]
Subject: [Milsurplus] Motor tuned ARR-2 ?

On Ebay now, this motor tuned ARR-2 receiver. I have not seen one before. So how was this controlled; is it continuous

or step tuned?

-Hue Miller

https://www.ebay.com/itm/265677200648?mkevt=1&mkpid=0&emsid=e11021.m43.l1120&mkcid=7&ch=osgood&euid=efdb853c4ce44eeca2af149b9c758b10&bu=43186714112&ut=RU&osub=-1~1&crd=20220505013601&segname=11021&sojTags=ch%3Dch%2Cbu%3Dbu%2Cut%3Dut%2Cosub%3Dosub%2Ccrd%3Dcrd%2Csegname%3Dsegname%2Cchnl%3Dmkcid

WWII Military Radio R-4A/ARR-2 Homing/Navigation Receiver