Re: Topband: 4-square antenna spacing

2018-06-14 Thread Ed Hughes
Jim, you need ON4UN's 5th edition of "Low Band Dxing" page 11-93 talks 
about the 4 square with 1/8 wave spacing.


He says, regarding the 1/8 wave spacing (67 feet +/-)
- gain is down 1.3 db compared to 1/4 wave spacing.
- directivity is as good or better than 1/4 wave.
- has much narrower bandwith than 1/4 wave
- is harder to feed than 1/4 wave.

He covers the 1/4 wave 4 square in detail and may cover tweeking the 
spacing.


Get that book if you don't already have it.

Ed
KG4W


On 6/14/2018 2:57 PM, Jim & Nan Denneny wrote:

Manual says min spacing for 160M is 54ft and optimal spacing is 135ft.  135ft 
is a non-starter for my lot.  Can anyone comment on performance degradation 
between these two extremes?  Minimal? Substantial? Sensitivity? f/b? I cannot 
find experimental data.

Jim K7EG

Sent from Mail for Windows 10

_
Topband Reflector Archives - http://www.contesting.com/_topband



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Topband Reflector Archives - http://www.contesting.com/_topband


Topband: 4-square antenna spacing

2018-06-14 Thread Jim & Nan Denneny
Manual says min spacing for 160M is 54ft and optimal spacing is 135ft.  135ft 
is a non-starter for my lot.  Can anyone comment on performance degradation 
between these two extremes?  Minimal? Substantial? Sensitivity? f/b? I cannot 
find experimental data.

Jim K7EG

Sent from Mail for Windows 10

_
Topband Reflector Archives - http://www.contesting.com/_topband