[TowerTalk] Phased Verticals

[Bill]

Which design are you referring to Tor?

Bill
W7VP
----- Original Message ----- 
From: <rt_clay at bellsouth.net>
To: <towertalk at contesting.com>
Sent: Wednesday, April 05, 2006 11:30 AM
Subject: Re: [TowerTalk] Phased Verticals


>> Another source for phased vertical information is in a 
>> Telex-HyGain Engineering report entitled "Phased Multi-Band 
>> Verticals for Additional Gain and Low Angle Radiation."  The 
>> report is undated but contains designs for 2 and 3 element 
>> phasing systems showing the patterns and switching 
>> configurations.  In the report the 3 antenna system is shown 
>> with the antennas placed at the corners of an equilateral 
>> triangle with each side of the triangle being 1/4 wavelength. 
>>  In this configuration the report states that for the three 
>> antenna configuration a 60 degree pattern can be switched in 
>> six selectable directions.  Note that the cardioid pattern 
>> shown in the report for the two antenna system is not totally 
>> correct (it shows a point in the gain direction) and it does 
>> not show patterns for the three element array.
> 
> Also note that the phasing for the cardioid array shown in that
> report is incorrect. You can't just add a "delay" line of 1/4 wavelength
> to get 90 degree phasing.
> 
> Tor
> N4OGW
> 
> 
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