[TowerTalk] Stacking Log Periodics

[Jay Terleski]

Thats not really a good idea Ken,  I would point out that an L network
has a very small bandwidth. I suggest to do it a different way.  Use a
matching nework that is broadbanded. Like the StackMatch wideband UN-UN
transformer.

Then the logs will have the proper impedance matching over their entire
bandwidth.

So this the technique.

Run equal lengths of 50 ohm coax to a central point between the logs
place your Stackmatch here, it will match the logs properly to select
U/L/Both. Then run a line of hardline down to the shack. It can be CATV
to save more money and have less loss.  Match it with a couple of 50:75
ohm UN-UN Xfrms.

L networks are work at one frequency.  And I know that K7GCO knows this,
he probably just was in a hurry.

Jay, WX0B

K7GCO@aol.com wrote:
> 
> In a message dated 12/6/00 1:47:22 PM Pacific Standard Time, dxdog@rcn.com
> writes:
> 
> << Anyone have any experience, pro or con, with stacking logs?  Jerry K3MGT
>   >>
> It's a great concept.  I'd stack at about 30'.   Run equal length coaxes in
> to the shack, parallel them and match with an L network.  You could select
> one or the other or both for an A/B/C test.  k7gco
> 
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-- 
Jay Terleski
WX0B - Array Solutions
www.arraysolutions.com

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