[TowerTalk] 4-square question

[Andrew Williamson]

Hi Jim,

That's exactly the information I wanted.  

I'd never used a 4-square on 40M before ZL9CI, or any band for that
matter, so I was reading about them and trying to understand better how
they worked.  To quote from the ZL9CI video (www.qsl.net/zl9ci/ for
details), 'the 40M 4-square was a real powerhouse'.  I certainly can't
argue with that!  I was surprised at the performance considering how
simple the antenna was to install.  The instant direction switching,
though not totally necessary on a DXpedition, is a great boon to DXers
and contesters.  And the Comtek hybrid coupler you supplied worked
flawlessly.  Another satisfied user!



In message <19990925.161831.-718049.0.K4SQR@juno.com>, Jim MIller
<k4sqr@juno.com> writes
>Andrew,
>
>The power split is four ways, ie, with 100 watts, 25w to each vertical.
>So whatever the transmitted power was at ZL9CI, one-fourth was sent to
>each vertical by the Comtek Systems ACB-40 Hybrid we furnished for the
>Campbell Island operation.
>(-180 -90-90 & 0 degrees.)
>73,
>Jim, K4SQR
>Comtek Systems
>www.comteksystems.com
>E-Mail: comtek4@juno.com
>
>
>On Sat, 25 Sep 1999 17:44:05 +0100 Andrew Williamson
><andrew@gi0nwg.freeserve.co.uk> writes:
>> 
>>  Hi all,
>> 
>> I have a simple (dumb) query about the operation of a 4-square.  
>> 
>> Assume that the four verticals are properly tuned and are being fed 
>> with  a standard hybrid coupler through RG11 coax and I am operating at
>
>> the  resonant point.
>> 
>> If I feed the array with 100W, what is the power split to each 
>> element. Is it 25W, only fed +/- 90 degrees, or some other split? 
>Basically, 
>> I
>> want to know the power level at the output of each port of the 
>> coupler.
>> 
>>
>> Andrew Williamson GI0NWG / AC6WI
>> Homepage = http://www.gi0nwg.freeserve.co.uk/
>> 
>> One of the ZL9CI gang
>> http://www.qsl.net/zl9ci/
>> 
>> --
>>
>

Andrew Williamson GI0NWG / AC6WI
Homepage = http://www.gi0nwg.freeserve.co.uk/

One of the ZL9CI gang
http://www.qsl.net/zl9ci/

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