On 1/22/2014 4:32 PM, Irv Finkleman wrote:
Q. Is there a relationship between the efficiency of an antenna and the
received signal strength?

Just pondering on the matter. Because I have to operate with
restricted space antennas, usually with low efficiency, I wonder how
much of a relationship exists between Efficiency and Received Signal
Strength?

This leads to more questions such as how much do radials contribute
to efficiency?

IF that isn't enough, how much do radials contribute to the bandwidth?

And...

And...

I'm never to old to learn, but I am old enough that a lot of mathematical
mumbo jumbo and Smith Charts tend to confound me!

For starters, I will be operating using an MP-1 antenna and a Yaesu
FT-817ND. I also have an MFJ-931 Artificial Ground, but propose
attaching the radials to the feedpoint on the MP-1. I intend to cut four
radials for 20M and spread them around the base of the antenna in
my room, and once the weather warms up, I'll try the antenna out on
the balcony with the radials spread around whatever real estate it
provides.

Thanks for any input on the matter....

Irv VE6BP

RADIATE OR DIE TRYING!







Irv, I have a pdf file about ham antennas that is written in very nice
plain language and explains all the benefits and downfalls of different
types of antennas and grounds. If your email is correct I will send it
to you.

Michael