[TowerTalk] Phased Vertical Follow-up

[larryjspammenot@teleport.com]

I do have the ARRL Antenna Compendium volumes, except for Vol #5 and #7, so I'll look through those to see if the article is in of of them. Someone mentioned mounting the couple of verticals above a metal roof, but my garage is a typical "Stick-built" construction, with 2X6 construction, composite shinge roof, and effectively no metal. I'll have to use tripods, radials, etc.


-----Original Message-----
>From: jimlux <jimlux at earthlink.net>
>Sent: Mar 14, 2009 11:02 PM
>To: "larryjspammenot at teleport.com" <larryj at teleport.com>
>Cc: towertalk at contesting.com
>Subject: Re: [TowerTalk] Phased Vertical Follow-up
>
>larryjspammenot at teleport.com wrote:
>> I've been wanting to try a pair of phased Butternut HF6V vertical antennas for 40-Meters, mounted on my garage roof. I already have them, that's why I'm looking at Butternut. The garage is 40 feet long, so I trust there's enough spacing for proper operation. 
>> 
>> Looking at that Hy-Gain Engineering report for Amateur Phasing (I picked up my copy back in the 1960's), I know any verticals should work okay, not just the Hy-Gain ones. However, since that report and procedures info for phasing two or three vertical antennas was written, there have been improvements to the test procedures, computer modeling, and probably much discussion as to how best to tackle a simple 2-antenna vertical array used for just 40-Meters. That Hy-Gain report is given in the last four pages of the link shown earlier. I'd be interested in any suggestions or improvements before I look at doing it as shown in this Hy-Gain report.
>> 
>>
>What about the scheme in the ARRL antenna compendium from the EE prof.. 
>Basically a pi network that gets adjusted and a DPDT switch to flip the 
>phasing.  You adjust for a null on the desired station, then flip the 
>switch.
>
>
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