[Milsurplus] history of optical digital radio display?

[Al Klase]

Brian,

I'd be really careful with the word "digital."  AFAIK, the E-52 is a 
projection of an analog dial to achieve better tuning resolution.
This goes back at least as far as the Ward's Airline Movie-Dial Radios 
<https://www.classicradiogallery.com/radiopages/airline62403.html> ca. 
1936.  (I'd post a picture, but this reflector is a DAMN MESS!)

Even the Collins R-390, ca, 1951, is just a Veeder-Root style turns 
counter on an analog PTO.

I'm not sure we see a real digital display until ca. 1966 in the 
Watkins-Johnson 357.

My two cents,
AL



On 2/2/2024 9:21 AM, Brian Harrison wrote:
> Hello all,
>
> I am starting to work up an antique wireless association presentation on the advent of the optical digital display - who invented, what military and civilian radios of various countries used, etc etc… At this point regarding military radios I'm assuming the WW2 Germans were first wth their E-52 family of receivers with the Russians and US picking up on the idea possibly assisted by "inheriting" German radio engineers - and maybe in the case of the Russians, entire manufacturing plants.
>
> I’d appreciate any info or ideas…!
>
> Tnx and all the best,
> brian
> KN4R good on QRZ
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
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