Andy

Presumably you have seen this:

http://www.hanssummers.com/radio/huffpuff/contents.htm

Stewart G3YSX

Talbot Andrew 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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