[time-nuts] Info on General Radio 275, 276, 375, & 376

[jmfranke]

Yes, he is a most knowledgeable and helpful person.

John

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From: "Larry Snyder" <larrys at teamlarry.com>
Sent: Saturday, July 03, 2010 7:33 PM
To: <time-nuts at febo.com>
Subject: Re: [time-nuts] Info on General Radio 275, 276, 375, & 376

> Have you touched base with Henry Hall?
> -ls-
>
>
> "jmfranke" <jmfranke at cox.net> wrote:
>> I am in the early stage of writing a history of the General Radio
>> model 275 crystal (piezoelectric) oscillator. I have one complete 275,
>> and parts to a second.  The 275 was the first commercially available
>> crystal oscillator.  I hope to restore both 275s to operation.  The
>> paper will also cover the model 375 station monitor which followed the
>> 275 and used the same oscillator.  I have most of a 375, which I will
>> soon begin restoration.  I am interested in any pieces of hardware,
>> including models 276 and 376 Quartz Plates, and any documentation (or
>> copies thereof) including the relevant portions of the General Radio E
>> and F catalogs.
>>
>> Sincerely,
>>
>> John    WA4WDL
>>
>>
>> John M. Franke
>> 1500 Ibis Ct.
>> Portsmouth, VA 23703
>> 757 465 1204
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