Hi Owen,

"Owen Duffy" wrote in message
...
Yes... but summing the contributions isn't trivial.

OK.

I don't know what you mean by "problem". I have explained above that it
should be accounted for, and a method.

By "problem" I mean "the noise contribution from the loss resistance of the
antenna is routinely ignored." -- Presumably because the background EM noise
(coming in through the antenna's radiation resistance) often far exceeds it.

I haven't been to ham fairs in your country, but here there are mostly
focussed on exhanging junk (selling the junk bought at the last fair, and
buying some different junk to sell at the next fair).

:-)

The larger ham fairs often have some reasonably "meaty" technical seminars
(antenna design and modeling in, e.g., EZNEC is popular). Somewhat more
focused conventions (e.g., Microwave Update) often end up with a fair amount
of technical information as well.

But yes, there's always plenty of junk to be exchanged and junk food to be
consumed.

eBay has diminished the number of true "deals" left at ham fairs, but they do
still exist... including such relevant items as phase noise meters, LNAs, RF
generators.

---Joel