Dear Alan,
Thankyou. We are a little way down the message ladder, so this refers to several messages back.
Thankyou for an injection of sanity (to me, anyway). I will continue to play, plod on, and learn from it all. I am still in awe of the whole process:- that something costing as little as ?50/¡ì60 can give so much information and learning potential.
In my whole personal history of self-teaching in electronics, the nanovna saga beats the occasion when I got an Army Surplus Creed teletype working on an HRO ww2 reciever through a home made terminal unit decoding Roeters News about the 1967 Czech revolt which was reported in The Times newspaper the next day (I was 17).
I should be greatful that my career does not depend on understanding all this stuff. In my work, I just put people to sleep and (usually) woke them up again (ok, a joke I was somewhat better than that in my career as an anaesthetist).
Steve L