On Thu, 04 May 2006 06:02:32 -0700, dansawyeror
wrote:

Or: Are current and voltage probes inherently easier to build and more accurate
then directional couplers?

Hi Dan,

Probes have the benefit of being more sensitive, but you pay a price
in a far greater probablity of distorting the measurement. Unless, of
course, you are only looking for an indication which is qualitative
instead of quantitative.

Directional couplers are quite robust, accurate, and in my experience
I've never seen one that fell outside of its tolerance - except at the
band edges.

73's
Richard Clark, KB7QHC