On 2 Mar 2007 07:40:48 -0800, "MRW" wrote:

I am concerned that if an unmatched monopole antenna is used in this
system, then it is possible that very low level signals will not be
measured.

It is distinctly possible high level signals won't be measured either.

What do you experienced ones think? Thanks!

Skip the math and simply build a matched antenna. If you can do the
whip part, do it again below it and choke the line leading to the two
elements. (Google "vertical dipole." If your signal is horizontally
polarized, substitute "horizontal dipole.")

***** end of problem *****

73's
Richard Clark, KB7QHC