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Re: LF: Request to any (relative) OTs out there !

To: [email protected]
Subject: Re: LF: Request to any (relative) OTs out there !
From: "Simon Lloyd-Hughes" <[email protected]>
Date: Fri, 04 Jan 2002 10:21:40 +0000
In-reply-to: <[email protected] v.uk>
Reply-to: [email protected]
Sender: <[email protected]>
Andy,

If you have the Technical Topics compendiums a number of circuits appear in
them. There was also an article in Elektor

At 09:22 04/01/02 -0000, you wrote:
A request for anyone out there who was receiving RadCom or any other
magazine,  before I joined in 1975......

I'm looking for the reference to the Huff-Puff stabilisation scheme, and in
particular the improved Mark 2 modified version that, seem to recall,
employed a counter rather than a simple flip-flop.  It almost certainly
appeared in Radio Communication in the 1970s, and from what I remember of
talk in my local radio club in those days, was probably around 1973 - 74.
Have a feeling I'm in the process of 're-inventing' it for a high stability
GPS locked source for low data rate signalling, and don't want to claim the
credit for an idea that appeared over a quarter of a centuary ago!

With a PIC instead of all the control logic, it should certainly be a lot
easier and simpler than the original concept!

Andy G4JNT


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