[Boatanchors] National 6 pin coil forms

[Al Klase]

Hi Carl,

You got me thinking, and reading.  Actually, coil forms with the same 
base were used in the National "AC Thrill Box" (SW-5) first advertised 
in QST in July 1930.  I'm pretty sure the standard 6-pin tube base was 
not introduced until significantly later.  The AGS dates to mid-1932.

So, I stand by my position that National's 6-pin bas was a case of 
necessity being the mother of invention rather than anal-retentive 
marketing,

Best regards,
Al

Carl wrote:
> Those coils originated with the AGS which uses a 6 pin 89 as the output.
>
> More likely the reason was for a captive audience as the forms were 
> available in the catalogs.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- 
> From: "Al Klase" <al at ar88.net>
> To: "Carl" <km1h at jeremy.mv.com>
> Cc: "Rodger" <wq9e at dtnspeed.net>; <Boatanchors at mailman.qth.net>
> Sent: Sunday, January 18, 2009 12:35 PM
> Subject: Re: [Boatanchors] National 6 pin coil forms
>
>
>   
>> Carl wrote:
>>     
>>> Dont you just love that proprietary form Roger!.....
>>>
>>>
>>>       
>> Actually, I'm pretty sure that National arrangement predates the 
>> common 6-pin tube base.
>>
>> 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/