[ARC5] What the......?

[Geoff]

Loktals were partial in the 39 Ford and full bore in the 40 but I dont 
remember if both the Philco and Zenith models were the same. Id also have to 
get out the manuals to confirm Lincoln and Mercury.




----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>
To: <kgordon2006 at frontier.com>
Cc: "ARC5 at mailman.qth.net" <arc5 at mailman.qth.net>
Sent: Friday, March 14, 2014 5:28 PM
Subject: Re: [ARC5] What the......?


> Being cynical, perhaps it was a marketing success for 'high vibration'
> locations.
>
> Weren't they used in early post-war car radios?
>
> -John
>
> ================
>
>
>> On 14 Mar 2014 at 13:58, J. Forster wrote:
>>
>>> I wonder why they went to Loctal, rather than 7 or 9 pin miniatures? The
>>> smaller tubes were used in the VHF stuff.
>>
>> That is a good question to which I do not know the answer. I might hazard
>> a
>> guess: I have yet to find a bad Loctal tube unless the pins have been
>> corroded off.
>>
>> Maybe at the time the Loctals simply had a proven track-record for
>> reliability
>> that the miniatures had not yet matched.
>>
>> I dunno. Just a guess.
>>
>> My very most favorite tubes are the subminiatures.
>>
>> Ken W7EKB
>>
>>
>
>
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