[TowerTalk] Why horizontally polarized antennas?

[jimlux]

Roger (K8RI) 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.
> 
>


I think that the noise isn't actually polarized.. It's more a matter of 
the fine details of the antenna pattern for noise sources that are 
physically close to your antenna.  I'll see if I can find the references..