[TowerTalk] Stacked KT34XA's vs The Competition?

[StellarCAT]

I wonder if he had the phasing wrong?!

Again - the difference is HEIGHT - not gain! I have heard of 
people that have stacked the C3's and have had excellent results 
even though they only have 2 elements per band.

The C31should be and I am sure is a couple db stronger than the 
C3 on 20 and more on 10 and 15 - they are full sized elements so 
no reason to think otherwise. But as many know simple beams will 
often beat out long boom yagis when the smaller antenna just 
happens to be at the right height for the incoming angle. 
Modeling will show at times 10 - 20 db difference - a vast 
amount more than the difference in gain between the two. Of 
course the ultimate is to have both - long booms AND stacks to 
take advantage of height requirements. Too much for this poor 
boy!

g.




----- Original Message ----- 
From: "Bill Parry" <BPARRY at RGV.RR.COM>
To: "'StellarCAT'" <RXDesign at ssvecnet.com>; "'tower'" 
<towertalk at contesting.com>
Sent: Tuesday, March 28, 2006 3:26 PM
Subject: RE: [TowerTalk] Stacked KT34XA's vs The Competition?


I have a friend who "used to" have a two stack of KT34XA's. He 
lives about a
file from me. We did some comparisons running the same power. My 
antenna is
a F12 C-3E(the little one). He did the test using his upper 
antenna. I was
positive the KT34XA would blow me away.

C3E was a winner on all three bands, sometimes a little and 
sometimes a lot.
When he switched in the stacked, the difference was lessened and 
sometimes
the stack prevailed. I didn't include how many db different.

I had intended to replace the C3E with a C31, but considering 
the weight and
cost of the antenna I decided
not to.

I'm not sure why the question had to do with the KT34XA anyway. 
The current
version of this antenna is the KT36XA and it has been 
reconfigured. If the
C3 is "even" nearly as good I would opt for the F12. The C3E is 
much
smaller, much easier to put together and much, much more 
expensive.

Hope that this may help in some way.

Bill, W5VX


>Subject: [TowerTalk] Stacked KT34XA's vs The
>Competition?
>
>I have three f12 C31XR's here - up since Dec of last
>year. Not
>that it is anything spectacular but in 11 weeks I have
>managed
>to work over 200 countries from out here in AZ (no
>contests
>included) - not an overly easy task at this time of the
>sunspot
>cycle as well as from out west. [Heights 121', 81', 41']
>
>I can say MOST of the time the stack is the best of the
>bunch -
>on 20 rarely is there much difference between it and the
>singletinfo/towertalk