What the Heck Is It ?

Man, youze guyz are on the ball today.

... ADF radios used AM freq. band. Knob on the right tunes the radio station and (missing) knob on left tuned the antenna for direction....
2" seems a little small for a car... but about right for an airplane.

For years i was thinkin' ADF radio head, but ADF would go down to around 100-200 khz.

Dial for AM. Makes sense. Motorola has always been big in radios. Looks like there might be 2 threaded holes to mount the dial to a dash. Maybe the other side large hole held the rotating cable to the box where the tubes of the tuner/amp of the radio was. Lower mid opening would be for a socket for a backlight.

Yup, looks like it used rotating cables.


And our resident Motorola engineer chimes in.
Ding, ding, ding.

Wow, one of the first car radios from the '30s, the origins of Motorola.

Then, I find this on eBay:
MotorolaDial06.jpg
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/401227628461
 
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Not clue what it is...For vacuum bagging? Composite parts making?
 
Yup, it's a fitting for vacuum bagging composites. They're at about 10 minutes....
 
I took an aircraft airframe sheet metal repair class with the GI Bill I earned. We learned composite repairs.
 
Man, youze guyz are on the ball today.
And our resident Motorola engineer chimes in.
Ding, ding, ding.
Wow, one of the first car radios from the '30s, the origins of Motorola.
Heh, yeah, we were "indoctrinated" with the company history.
I've actually seen photos of those radios before.
Indeed, it was the product that got Motorola off the ground.
But it was their portable radios that helped win the war!
Pity the company barely exists any more.
 
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