[TowerTalk] Stacking Antennas

[Dave Johnson]

You said "stack match".  If you are talking about the Array Solutions Stack 
Match, you may want to check with Jay about using 75 ohm feed line.  His 
system uses equal length of 50 ohm feed line from the relay box on the tower 
to each antenna.  How sweet it is to be able to use the high antenna alone, 
the low antenna alone or both antennas together.

Dave - K4SSU


----- Original Message ----- 
From: <Cqtestk4xs at aol.com>
To: <TOWERTALK at contesting.com>
Sent: Thursday, March 26, 2009 2:03 PM
Subject: Re: [TowerTalk] Stacking Antennas


> In a message dated 3/26/2009 5:39:51 PM Greenwich Standard Time,
> nq4u at mtars.org writes:
>
> Plans  are to add a stack match.
>
> Both antennas will be fed with 75 ohm  hardline cut to proper length. Wire
> antennas will also be located on this  tower.
>
> Will there be some pattern distortion due to different  antenna spec's?
>
> What are some problems that others have had in  stacking two different
> antennas such as these?
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
>
> Anecdotal here:
>
>>From what I've heard stacking dissimilar Yagis has been met with mixed
> success.  I'm not sure of the reasons.  Boom length and phasing  problems 
> come to
> mind.
>
> I've been stacking IDENTICAL antennas since the 80's and have always been
> successful.
>
> Bill KH7XS/K4XS
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