[TowerTalk] Rain drops noise on Yagi (dipole)

[Courtney Judd]

for what it is worth, I have had several quads over the years and my 
experience has been that they hardly ever have rain static while my 
yagi's always did.... I do not know the reason though! In the 1970's I 
had  a Hygain 2 el quad at 100 ft and my neighbor a mile away had a 
th6dxx yagi at 100 ft.  I could consistently open the band 15/20 minutes 
before he did, close the band 15/20 minutes later than he did, and he 
always complained of rain static when it was never a problem for me. We 
had identical rigs: Drake C-lines and SB220's ... only difference was 
the antennas. That's my actual experience! 73's Cort K4WI

> Richard Smith <mailto:n6kt1 at sbcglobal.net>
> Thursday, December 06, 2018 10:24 AM
> Bob and John,
> Have either of you had a cubical quad at your station, so that you 
> could switch between a yagi and a quad, and observe whether the quad 
> had lower noise? From what I have read, it seems to be reported very 
> often that a quad is much quieter during times of rain static.
> 73, Rich, N6KT
>
> On Wednesday, December 5, 2018, 6:11:40 PM PST, john at kk9a.com 
> <john at kk9a.com> wrote:
>
> I have similar QRN results as KQ2M using my homebrew OWA beams. At first I
> thought it was related to the OWA design but according to everything 
> that I
> have read by W8JI and others, it is not. In my case during rain static
> events, no antenna is quiet however lower is definitely better. I use
> MicroHAM micro STACK switches and with a simple button push I can disable
> the noisy antenna on RX but it is a pain to operate that way. I 
> believe that
> there is a way to automate switching so it transmits into all antennas and
> receives using just a lower one but I have not attempted this.
>
> John KK9A - W4AAA
>
>
>
> Bob Shohet, KQ2M wrote:
>
> I have had difference experiences than Jim.  When the rain static is
> horrible (at the level where is sounds like the drumming section in a 
> large
> marching band  ;-)  the the top yagi is always the loudest in Ierms of
> hearing rain static, it is NOT the only one that gets it and that has been
> true whether it has been 10, 15 or 20 meters.  What happens at my qth is
> that the top is the loudest by far, the 2nd one down is moderately 
> loud, the
> 3rd one down has some static and the 4th one down (bottom) is quiet.
>
> With lower levels of rain static, the top is still the loudest but the 2nd
> and 3rd one down may not experience any.
>
> I use 5L Hygain HG205CA, 155CA and 105CA's.
>
> 73
>
> Bob, KQ2M
>
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