[JMS] Millen 90640 Frequency Determination Unit - Do Any Exist?

[Robert A Sullivan]

I’ve never seen one but the dial and buttons sure look like this! (501 receiver)
See page 8 of the 1947-48 Millen catalog.

73, Bob
WØYVA
Personal site: isquare.com <http://isquare.com/>











> On Jan 30, 2023, at 3:24 PM, Don Buska - The Radio Lab Works <don at radiolabworks.com> wrote:
> 
> Has anyone ever seen this beast, or was it yet another item that was in the Millen catalog but never seen the light of day?  It's a hybrid of the old Frequency Meter, standard crystal oscillators and an HF Receiver.  I just saw this in the Millen 1946 - 1947 Electronic Laboratory Equipment Catalog that's for sale on eBay right now. I did snag a picture of the unit and the description from the eBay ad and have it on my website for your review.
> 
> Picture of the 90640 Frequency Determination Unit:
> 
> https://www.radiolabworks.com/files/Millen/90640%20Picture.png
> 
> Description of the unit:
> 
> https://www.radiolabworks.com/files/Millen/90640%20Desc.png
> 
> Personally I've never seen one, but that's not to say this wasn't a special contract build for Millen and they just decided to put it in their catalog.  That wouldn't be the first time for them.  Also of note are some similarities to items incorporated into their two ham receivers that were advertised a year later, but that also never made it to formal production. I can't imagine this was a low cost item!
> 
> Enjoy es 73
> Don N9OO
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