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Re: [TowerTalk] RCS-8 as a StackMatch---How?

To: "Tower and HF antenna construction topics." <>
Subject: Re: [TowerTalk] RCS-8 as a StackMatch---How?
From: Pete Smith <>
Reply-to:, "Tower and HF antenna construction topics." <>
Date: Sat, 03 Apr 2010 07:47:50 -0400
List-post: <">>
I have run a Stackmatch for maybe 10 years on a 2-high stack of small 
tribanders. If you have a fussy amp, you will probably have to retune, 
because in my experience the two antennas vary markedly from one 
another, due to different distances above ground, etc.  The compromise 
impedance transformations in the Stackmatch are just that. Fortunately, 
my SDB-220 just keeps on going.

73, Pete N4ZR

The World Contest Station Database, updated daily at
The Reverse Beacon Network at, blog at

On 4/3/2010 1:03 AM, Joe Subich, W4TV wrote:
> Remember, the N4TZ system is for monoband antennas and does
> does not work with multi-band antennas.  Stacks of Tribanders
> - particularly three antenna stacks - need a stack controller
> that properly matches the paralleled impedance over the entire
> operating range for any combination of antennas - not some
> compromise that requires retuning the amplifier (particularly
> high gain triodes with sensitive grids) as the configuration
> changes.

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