[Milsurplus] Motor tuned ARR-2 ?

[Michael Hanz]

That's a good point, Michael.  The C-116/ARR-2A was also provided, at 
first primarily for fighters where the room for surface mount boxes was 
minimal.  At 6" wide, the rack box style was 1/4" wider than the later 
(and still current 5.75" width) style of MIL-C-6781 which had the black 
etched Lucite panels that were back lit, and Dzus 1/4 turn fasteners to 
make quick removal a joy.  More on the earlier interim rack control box 
system is at https://aafradio.org/flightdeck/box.htm

Here is a picture of the C-116.


On 5/5/2022 8:34 PM, MICHAEL BITTNER wrote:
>
> In addition to the control box shown in the drawing submitted by 
> KC4TOS there is a more modern, rack-mounted version with a 
> transilluminated panel and transilluminated knobs and dials in 
> accordance with MIL-C-6781.  Mike, W6MAB
>
>> On May 5, 2022 at 5:55 PM Michael Hanz <aaf-radio-1 at aafradio.org> wrote:
>>
>> It's no different than the original switching scheme, Hue, which is 
>> step tuned.  The intent of the C-37/ARR-2A "electric tuning control 
>> adapter", which is synchronized with the compatible C-35/ARR-2A 
>> channel selection switch, was to eliminate the problems of long runs 
>> of flex tuning cable between the receiver and the control box.  That 
>> allowed more flexibility for where they could install the receiver.  
>> The motor drive adapter was cleverly made to be capable of 
>> installation on the original R-4A/ARR-2 receiver.  Attached is the 
>> installation diagram for the whole shebang.
>>
>> -Mike  KC4TOS
>>
>> On 5/5/2022 5:07 PM, Hubert Miller wrote:
>>>
>>> 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 
>>> <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*
>>>
>>
>
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>

-- 
Michael Hanz - KC4TOS
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