Reg spoke of the SWR meter as a resistance bridge. It is
possible to
build a
meter that is a bridge
===================================

The so-called SWR meter is ALWAYS a resistance bridge (although it
may
be described in other terms).

Utter nonsense.

There are numerous ways to measure SWR without using a bridge of any
kind.

A bridge implementation is mearly a simple and cheap way to do it
and
hence the most likely to be found in use by a hobbiest.

=====================================

I'm sorry to say you are all banging your heads against a brick wall.

The so-called SWR meter does NOT measure SWR.

For starters, there is no transmission line on which to measure
anything. Can you find one? It is NOT the one which goes between
tuner and antenna.

To measure SWR on THAT line the meter has to be located in the air at
the antenna end of the line and has to be read using an astronomical
telescope mounted on a tripod. But it would still give the wrong
answers.

Go and think about it some more.
----
Reg, G4FGQ