Topband: Using the K2AV folded counterpoise at VK6VZ

Tom W8JI w8ji at w8ji.com
Sun Aug 26 12:09:55 EDT 2012


Hi Steve,

> Having read about the K2AV folded counterpoise, which I could mount along
> one side of the half acre block here, I decided to (once again) try a
> Marconi antenna.  With the counterpoise in this position, I put up a 3/8
> wave inverted-L antenna with a 100-foot vertical section (the antenna is
> 100-foot up, 100-foot out, similar to that used by K2AV).

So you had multiple verticals before that disappointed you, always had more 
success with an Inverted V.

Now you have a new antenna in a new spot with a new counterpoise that also, 
because of lengths, has considerable horizontal component.

I know this might ruffle some feathers, but when we want to evaluate a 
counterpoise change, we really should change only the counterpoise and the 
antenna should not freely allow horizontal component. Otherwise we really 
don't know what part really did what.

You post implies a T with thirty 60-foot to 100- foot radials was relatively 
ineffective, as were all verticals, but the antennas were entirely different 
(and even in different spots), and the T should have no horizontal component 
at all.

Now you have a 100 ft long horizontal up 100 feet fed by a vertical wire 
that might not even be radiating much if it is near a tower.

I changed the front tires to new economy six plies, fuel tank shock mounts, 
changed a fuel filter, and repaired the fuel tank crack on my tractor, and 
the new front tires let me mow twice as far on a tank of fuel.    :-)


73 Tom 



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