[ARC5] System ID for 1939 patent

[Michael Hanz]

It was a later development of the E4 and SCR-186-T5 radio compasses, 
Brooke.   I'm not sure it ever got an official nomenclature, since there 
were competing systems being touted at the time in a battle between the 
Air Corps and the Signal Corps, apparently won by the less than 
satisfactory SCR-242 in a faceoff between the Generals. See the bottom 
half of the web page at 
https://aafradio.org/flightdeck/1935/SCR-AE-183.html for more on the story.

73,
Mike  KC4TOS

On 7/1/2020 4:19 PM, Brooke Clarke via ARC5 wrote:
> Hi
>
> Is there a system name for this RDF?
>
> This patent shows a Radio Direction Finder installed in what appears 
> to be a two seat biplane.  The patent application was in 1933 and it 
> was granted in 1939.
> The patent seems to cover all the parts of the system, not just one 
> aspect.  There is no company assigned.
> The inventor, Geoffery G. Kruesi, has other similar patents some for 
> Bendix and Federal Signal.
> Page one of the patent is here:
> https://prc68.com/I/RDF.shtml#2142133
> and clicking the image gives a larger image.  I'll try and attach the 
> image below:
> 2142133 Radio direction finder, Geoffrey G Kruesi, 1939-01-03

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