[TowerTalk] 40 -2cd

[David L. Thompson]

Marc,

My Cushcraft 402CD seems to load on 160 meters through a tuner.  Its almost
as good as my L or Multee on transmit.   It is up 86.5 feet.
What I assume is that the coax is loading and the 402CD is acting as a top
hat.   You don't say if the 24 meter height was on the same tower, but
putting the 402CD on a tower that is fed for 160 (either Shunt or N4KG
style) could cause a problem.   That is one reason (I have others) for not
using my tower for a vertical.   However if you have 1.5 SWR as the low and
less than 2 at the top and bottom of the band then you are probably OK.
Mine is set for 7150 but I have lost one of the capacity hats on the
reflector so my SWR has moved up band.  I now have 1.3 (min SWR)  at 7190.
I get 1.6 at 7299 and 2.2 at 7001.   With the capacity hat I had 1.2 at 7150
and 1.8 at 7299 and 1.9 at 7001.   The question is what is your front to
back or front to side now compared to 24 meters?

I also use mine on 17 meters (I need 8 more there for all DXCC) and have
used it on 12 meters (K1MM gave me the hint 10 years ago).
I find that on 12 meters the pattern is some type of cloverleaf so its
either great or in a null.

73 Dave K4JRB



>
> Hi folks.
>
> It's up again on the tower my 40-2cd.But i don't see any dip anymore.
> At 24m high it wass all ok.Just a dip on 7050.0 (swr 1.1)so very good.
> a moved it to the top at 28m.Now there is no dip anymore .at 7050 the
lowest
> is 1.5 and going to 1.8- 2.0 at the lower or higher end.There are no other
> antennes
> on the tower just a vhf vertical 2m higher.
> I use the tower also for shuntfeed at 160m.
> Shoud a take it down and tweeking the elements ?
> or is it just normal with this one ?
>
> Marc - on4ma
> 73
>
>
>
>
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>



List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 96 feet for under $1500!!  http://www.anwireless.com

-----
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