[ARC5] ARC's first range receiver of 1929

[zakariya.abu at yandex.com]

Ray,

That's an interesting information. Could you please elaborate it 
further? What kind of license was necessary at the turn of the 1920s and 
1930s to manufacture radios in the US? Was it related to the Prohibition 
times?

73,

Jan SP5XZG


W dniu 17.02.2025 o 13:39, raydio862--- via ARC5 pisze:
> At that time Aircraft Radio Corp. did not have license to manufacture radios covered by several patents so Stromberg Carlson built it for them.
> Ray
> 
> -----Original Message-----
> From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> On Behalf Of zakariya.abu at yandex.com
> Sent: Monday, February 17, 2025 7:33 AM
> To: arc5 at mailman.qth.net
> Subject: Re: [ARC5] ARC's first range receiver of 1929
> 
> Al,
> 
> Thank you very much indeed for the source information. Yes, I noted the plug-in coils module on the Smithsonian Institution's photo. What struck me was the Stromberg-Carlson's name seen just above the hand, and not the Aircraft Radio Corp.'s as suggested by the description on the Smithsonian Institution's website as below.
> 
> https://airandspace.si.edu/multimedia-gallery/14185hjpg
> 
> As far I as know, Stromberg-Carlson has always been into the telecom business, and acted as a contractor to make radio receivers for the military during WW II (eg. the BC-348). Does it mean that Stromberg-Carlson purchased the license or manufacturing rights from the A.R.C. to make Model D? I can't find a definite the answer in the 1930 QST piece.
> 
> By the way, A.R.C. later made a neat and compact Type 185 range receiver for the Navy, which covered  200 to 420 kcs.
> 
> 73,
> 
> Jan SP5XZG
> 
> W dniu 17.02.2025 o 02:10, Al Klase pisze:
>> Jan,
>>
>> Note the plug-in coil assmebly on the side of the Rx.  It could tune
>> from 235 to 8000 KHz with the appropriate coils.
>>
>> See attached.
>>
>> 73,
>> Al
>>
>> On 2/16/2025 4:16 PM, zakariya.abu at yandex.com wrote:
>>> Colleagues,
>>>
>>> I've just found a reference on the Smithsonian Institution's website
>>> that the ARC Model D of 1929 was the first commercial navigation
>>> receiver. See here:
>>>
>>> https://airandspace.si.edu/multimedia-gallery/14185hjpg
>>>
>>> Does anyone know the specs of this set? Did it cover the 200 to 400
>>> kHz range only?
>>>
>>> 73,
>>>
>>> Jan SP5XZG