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

[Dave Merrill]

I always wondered about the relationship between A.R.C and S-C and this ad
helps clear it up.

Dave
N9ZC


On Sat, Sep 12, 2020, 10:52 AM Al Klase <ark at ar88.net> wrote:

> 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
>
>
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> --
> Al Klase – N3FRQ
> Jersey City, NJhttp://www.skywaves.ar88.net/
>
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