With that much gain you wouldn't have to worry about going thru the
sunspot cycle low period. You will blast your way thru regardless. hihihi
BobK6UJ
From: W0MU Mike Fatchett <w0mu@w0mu.com>
To: towertalk@contesting.com
Sent: Thursday, February 2, 2017 2:20 PM
Subject: Re: [TowerTalk] 6 or 8 ele 20 meter beam
Good points. I have a broken 4 ele SteppIR which is now a 3 ele for now
at the top 70ft.
I was looking for something with big gain east for Stateside. There
probably is not enough gain to be gained vs the engineering issues. I
have ring rotator and planned to mount another SteppIR or something at
around 40ft. Stack match is in hand so that might be the best option
for gain vs too big and the stack does give options.
Thanks for all the feedback. I have plenty to work with.
On 2/2/2017 1:58 PM, Jim Thomson wrote:
> Date: Wed, 1 Feb 2017 12:12:24 -0700
> From: W0MU Mike Fatchett <w0mu@w0mu.com>
> To: Towertalk <towertalk@contesting.com>
> Subject: [TowerTalk] 6 or 8 ele 20 meter beam
>
> I am looking to side mount and maybe rotate a 6 or 8 element 20 meter
> beam would anyone care to share their designs? I have a bunch of
> aluminum itching to become an antenna!
>
> W0MU
>
> ## side mount on what type of tower ? Maybe rotate ? If it
> is fixed in direction, you are stuck in one direction, with half power
> points well below 48 degs.
>
> ## dave is right, stacking a pair of small yagis would provide the
> same aprx amount of gain. A pair of 204BAs, at 40 lb each, is
> a lot easier than 60-88 ft long boom monsters. Then you can use
> the typ top – bottom – both config. The monster yagi, at the wrong
> height for that particular time of day leaves you with no options.
>
> ## with a boom in the 60-88 ft long range, the tq issue on the tower has
> to be dealt with. Along with ice + snow loading, ice + wind at the same time.
> If the swr is off a bit, then what, haul the monster back down ? Any type of
> feedline or balun issue, and again, it has to come back down. There is
> big, then
> there is too big.
>
> Jim VE7RF
>
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