[MRCA] Mystery Radio

[Al Klase]

Just a threaded stud with a knurled nut.



On 11/30/2025 1:03 PM, Michael St. Angelo via MRCA wrote:
> What type of an antenna connection does it have?
>
> Mike N2MS
>
>> On 11/30/2025 12:58 PM EST Al Klase<ark at ar88.net> wrote:
>>
>>
>> There is a crystal socket to the side. There are also snap fasteners on the cover for the battery connection.
>>   
>>   
>>   
>>   I'm thanking it might have been some sort of test rig. Say, to be carried out on the flight line to adjust some avionic thing.
>>   
>>   AL
>>   
>>
>> On 11/29/2025 8:50 PM,ac2eu at yahoo.com wrote:
>>
>>> I don't see any XTALs and the selector switch has torroids
>>> The 3B4 tube was first introduced in 1948 according to the release notice, so it was post WWII.
>>>
>>>
>>> The more I look at it, the less it looks like a radio. maybe a metal detector chassis?
>>> On Saturday, November 29, 2025 at 03:28:43 PM EST, Al Klase<ark at ar88.net> wrote:
>>>
>>>
>>>
>>>
>>>
>>>   
>>>   
>>>   
>>>   Larger tube is a 3B4 (Gone to air)
>>>   
>>>   What is this?
>>>   AL
>>> -- 
>>>   Al Klase - N3FRQ
>>>   Jersey City, NJ
>>>   http://www.skywaves.ar88.net/
>>>
>>>
>>>   
>>>
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>> -- 
>>   Al Klase - N3FRQ
>>   Jersey City, NJ
>>   http://www.skywaves.ar88.net/
>>
>>
>>   
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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