Len wrote:

All noted and good, Ian. The thread had become (in my estimation)
one of those "intellectual exercises" that don't have much real
practical significance. :-)

"Small enough for VHF" is about as much as we need to know.

Agilent (what HP test and measurement
division became after Big Business of computer product take-
over of HP)

Or as someone said to me, "We're the world's #1 test equipment
manufacturer, and they just gave our trademark away to the world's #3
computer manufacturer."


I have some of the original
free App Notes from HP (back when HP was HP...:-) and the going
gets tough through all that four-port math. If someone else has
gone the same route and put it all into some software/firmware to
let the casual hobbyist go at it easily, then good all around.

Yes, indeed someone has!


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek