"Chuck" wrote in message

Hi MK,

When I stated:
(it's not a dummy
load as one would generally deduce from
the above description)
I wasn't joking. The fact that you've
never known a vertical antenna to
behave in this manner, is not surprising.

Oh, I have, but the lower noise was always due to increased losses
somewhere in the system...

The purpose of my experiment was to
investigate the possibility of loading
(shortening) an element while still
maintaining a relatively normal BW.

Adding loss would do that...

Avoiding parallel wires and coils, the
resulting loading system is what I
call E-field loading (perhaps a poor
choice of terms) - a method of
conductive loading that resulted in
reducing the off-resonance reactance
in the FP.

Still doesn't say too much...

I suspect it is effecting the
susceptance of the voltage loop in
some way.


Ditto...But I don't know how long the vertical is. Being you need
loading, I'll assume it's shorter than a quarter wave...Dunno...This
just doesn't really add up to me...I've fed verticals in many points,
at the max current, or max voltage points, or in between, and have
never seen this to effect noise pickup. Again, the only thing I've
ever seen to reduce noise, *and* keep the same pattern, was to
increase loss.

The unexpected bonus, of
course, was a reduced susceptibility
to electrical noise.

Due to extra losses? If you reduce susceptibility to far field
electrical noise, you are also reducing the desired signals at those
same angles. Rf is rf...What am I missing here? Myself, I consider the
so called "low noise" antennas to be old wives tails...
Even the shielded electrostatic versions, for the most part. IE:
shielded loops, etc...They are no more quiet than any other well
balanced loop made of normal wire windings. The shielded design is not
to magically reduce noise, it's to ensure balance. I'm not trying to
be ornery, but so far, what I read is not flushing to *me*...But I
don't believe in "low noise" antennas. To me, low far field noise
compared to another vertical antenna at the same angles and same
polarization, means increased loss somewhere if the pattern hasn't
changed. MK