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 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
______________________________________________________________
Milsurplus mailing list
Home: http://mailman.qth.net/mailman/listinfo/milsurplus
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Milsurplus@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

--
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

______________________________________________________________
Milsurplus mailing list
Home: http://mailman.qth.net/mailman/listinfo/milsurplus
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Milsurplus@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html