[ARC5] 1930 Aircraft Radio Corp Aero Digest Ad (Model D)

[Al Klase]

Hi Mike,

That was my suspicion, but I couldn't prove it.  Thanks for the 
reference.  If others need to grab that from ARRL the title of the 
article will help:  "A Multi-Range Receiver With Four Tuned Circuits By 
Robert S. Kruse"

Also the add scan in the Ebay listing is quite high quality, and worth a 
"save image as."

BTW, the 24's were screen-grid tubes (tetrodes) providing a lot more 
gain that triodes.

Thanks,
Al

On 9/12/2020 12:29 PM, Mike Morrow wrote:
> That's the famous Stromberg-Carlson Model D TRF receiver that covers 
> 235 to 8000 kHz with appropriate coil sets, A2/A3 only.  It has three 
> RF Amps, Detector, and an AF stage.  The AF stage is a type 27 and 
> other stages are type 24.  All are triodes.
>
> An detailed five-page article on this set is in October 1930 QST, page 
> 21 to 25.  The article includes internal photos and a schematic.
>
> The Model D is the original commercial set from which the USN's 
> RU-/RAJ series of receivers (17 different varieties) and the US Army 
> SCR-Ax-183/-283 receivers (19 different varieties) were developed up 
> to 1942.
>
> The Model D was an important development.
>
> Mike / KK5F
>
>     -----Original Message-----
>     From: Dave Merrill
>     Sent: Sep 12, 2020 9:03 AM
>
>     Has anyone ever seen one of there sets?
>
>     https://www.ebay.com/itm/363060364458
>
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: https://www.qsl.net/donate.html

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20200912/fcfa99ca/attachment.html>