On Tue, 27 Feb 2007 09:10:12 +0000, Ian White GM3SEK
wrote:

As Owen relates (and so have I) these instrument only sample V
and I on the line - they categorically DO NOT sample power.

Hi Ian,

We've been through this before. No instrument operates in the absence
of power. Simply because you and Owen are graced with instruments
that demand so little, does not negate what power they do rob from
what is available. Even the humble electrometer has to overcome the
force of gravity to open its foil leaves, and climbing that potential
energy hill is work over time - power.

Hammer down the directivity as much as you want, and it will still
resolve to some diminution of power available to the load. To wave a
hand and say NOTHING does not make it so.

73's
Richard Clark, KB7QHC