[TowerTalk] Why horizontally polarized antennas?

[DF3KV]

Horizontal dipoles have nulls in the azimuth plane verticals don’t have

73
Peter

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Kelly Johnson
Sent: Samstag, 3. Juli 2010 01:20
To: Roger (K8RI)
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] Why horizontally polarized antennas?

I've always thought this as well, but others have claimed this is not
true.  Can anyone explain why this is the case?

Yes, my anecdotal evidence supports this.  I've done side-by-side
comparisons of a 40m vertical dipole against a horizontal dipole and
always found QRN to be higher on the vertical.  I just don't
understand why this is the case.

On Fri, Jul 2, 2010 at 3:12 PM, Roger (K8RI) <K8RI-on-TowerTalk at tm.net>
wrote:
>
>
> On 7/2/2010 12:51 PM, Kelly Johnson wrote:
>> A co-worker asked me today why hams use horizontally polarized yagi's
>> instead of vertically polarized.  Am I correct that it has to do with
>> ground reflection gain?
>>
>
> All these answers and not one mentioned that on low bands, at least the
> QRN is predominately vertically polarized and using a horizontally
> polarized antenna means listening to less QRN although at times it seems
> difficult to believe when operating 75 or 40 in the summer.
>
> 73
>
> Roger (K8RI)
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