IMHO with the tri band antennas manufactured today..... the Christmas's
tree loss from interactions
over come there Mono band gain.......
At my old QTH I have two towers. a 10/40 combo and a 15/20 combo
YMMV Wayne W3EA
> From: w2ay@atmc.net
> To: n8de@thepoint.net
> Date: Thu, 11 Dec 2014 15:37:12 -0500
> CC: towertalk@contesting.com
> Subject: Re: [TowerTalk] Single tower and 3 monoband yagis -"Christmas
> three"
>
> Don, In a previous lifetime I Placed my 20 mtr
> beam above the 15m beam.
> ( Both 5 el monobanders) There was a
> Noticeable difference in the
> performance of the 15m yagi... both antennas had
> good swr , but
> the 15m yagi was VERY bad ...........Bill / w2ay
>
>
> ********************************************************************************--------------------------------------------------From:
> <n8de@thepoint.net>Sent: Thursday, December 11, 2014 2:35 PMTo: "Joe Subich,
> W4TV" <lists@subich.com>Cc: <towertalk@contesting.com>Subject: Re:
> [TowerTalk] Single tower and 3 monobandyagis -"Christmas three"> I agree
> with Joe, W4TV, but, would add the comment:>> PUT THE 20M monobander on TOP
> of the stack .. that is ..invert it, with the 10m on the BOTTOM.>> 73> Don>
> N8DE>>>> Quoting "Joe Subich, W4TV" <lists@subich.com>:>>>>> Unless the
> monobanders have been designed to operate in astack>> ("Christmas tree"),
> stacking them as closely as will beneeded to>> stay within your 5m mast will
> certainly reduce theirperformance.>>>> If the monobanders have been optimized
> to work in a stack,use the>> spacing for which they were designed.>>>>
> 73,>>>> ... Joe, W4TV>>>>>> On 2014-12-11 9:16 AM, Fuad Arnautovic
> wrote:>>> Hi all>>>>>> I need advice fr
om
> some mo
> re experienced with stackingabout possible setup.>>>>>> Have self-standing
> tower abt 18 mtr, mast 50 mm (2") 5-6metres long>>>>>> Antennas are three
> monoband yagis as follows>>>>>> 20m 4el 9,5m boom>>> 15m 5el 9,6m boom>>> 10m
> 5el 7,6m boom>>>>>> Does it "Christmas tree" setup working well with
> thismonobanders? What is your recommendation for vertical spacingbetween?
> Does 2" mast is strong enough to support all them.>>>>>> I would install
> lowest antenna for 20m then 15m and on thetop 10m>>>>>> I know that is
> compromise against performance and radiationpattern, but actually cannot
> install another tower>>>>>> Please help>>>>>> Thanks in advance>>> Fudo,
> E73CQ>>> _______________________________________________>>>>>>>>>>>>
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