N4KG comments inserted below.
On Tue, 19 Nov 2002 "RICHARD BOYD" <ke3q@msn.com> writes:
> I was single band 15 some years back, had a nice run going to Europe
> Saturday morning using 8/8 Telrex yagis (45' booms, 128/64'). The
> noise
What KIND of Noise? What was the source?
> started building 'til I couldn't copy the weak ones, which was about
> all that was calling me at that point.
>
> I also had a four-element Skylane quad at 70'. Switched to it, the
> noise went away and I was able to work all those weak ones.
I accept your observation. It is ALSO entirely possible
that if you had a YAGI on that 70 ft tower that the noise
may have disappeared as well. In other words, the
LOCATION and Height of the second antenna may have
been the REAL reason the noise disappeared.
>
> My conclusion was that full wavelength closed loop antennas have a
> low noise advantage, regardless of the debate over gain vs. yagis or
> performance at low heights, etc. A serious contester should consider
> having a quad for low noise receive, even if he continues transmitting
> on the big stack.
You can 'NEVER' have too many antennas. I've heard
similar stories from people who simply have MANY Yagi's.
>
> Drawbacks: mechanical -- cumbersome to build and put up and
> maintain, especially on a guyed tower. The next one(s) I put up
> will be on a self supporting tower. I have enough parts for 5/5
> and have a 70' tower set aside for this possible purpose. Also
> helpful, 20' stepladder or scaffolding to build them.
I'm NOT saying that Quads are bad antennas, only
that the comparisons cited are NOT conclusive. It
is inconceivable to me how a Quad could reject radiated
ATMOSPHERIC NOISE while a YAGI would NOT.
I thoroughly enjoyed using my Mosley 2L Quads
until some 'uninvited, illegal, Frozen Substance
from the North' bought them to their demise :-(
The wide SWR Bandwidth, broad pattern, and
modest F/B made them GREAT Multiplier hunting
antennas ! Tom N4KG
> 73
>
> Rich Boyd
>
>
> KE3Q/W3AO
>
>
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