[Elecraft] OT: The Colpitts mystery

[Kevin Cozens]

On 2020-04-27 11:06 p.m., Phil Kane wrote:
> On 4/27/2020 11:03 AM, Fred Jensen wrote:
> 
>> What was it with the FCC and the Colpitts oscillator schematic on the
>> exams in the 50's/early 60's?  It was on my General ['54] and Extra
>> ['56] exams, and practically everyone else I've asked says it was on
>> theirs too.  There are other oscillator circuits of the day.  Colpitts
>> uses capacitive feedback which is somewhat more stable than a Hartley
[snip]
> 
> They had to pick one of the two, and the rest was inertia.

Umm... there were three main oscillator types when I was first learning 
electronics. Colpitts, Hartley, and Armstrong.

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Kevin.

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