I would like to re-create the analyzer, but I can't find the schematic
anywhere. I think I first saw it in a UK ham radio magazine, probably some
time in the 1970s.

Does anyone here remember it and/or can tell me where I can find it?

--
73
Ian, G3NRW

It may have been published in more than one periodical, but what you're
describing was done by Peter Dodd, G3LDO and Tom lloyd, G3TML and was
presented in our QEX magazine for November 1987 back when QEX was still a
functional experimenters exchange instead of just an added source of revenue
for the League, publishing garbage when that's all they happen to have on
hand.

Contact me off group for help.

W4ZCB