"Dave" wrote in message
. ..
Feed it through a 1/4 wavelength stub.

That was my first thought and I invisioned 16 ft of open wire line runing
out across the yard. But now that I think of it this may be a workable
solution. No reason it has to be stretched out straight, circle it around
the antenna. Hmm back to Ringo again.

Jimmie D wrote:

I am trying to build a 20meter 1/2wl end fed vertcal antena and havent
had a lot of success. The antenna is for use at maximum legal power so I
need componets in the network that will hold up. I have tried a J pole
configuration that I never was able to properly tune and I have tried
lump sum LC values that melted down with max power. I guess the last way
is doable but not unless I want to spend really big bucks on new HV
capacitors. I was thinking about the matching section on my Ringo Ranger.
Why not just scale this up for 20M? The mechanics of it arent a real
problem, I can fabricate most anything I would need. Seems like I've
heard the mast for a Ringo needs to be at least a 1/4 wl long, is this
true?

Jimmie D wrote:
"Dave" wrote in message
. ..
Feed it through a 1/4 wavelength stub.

That was my first thought and I invisioned 16 ft of open wire line runing
out across the yard. But now that I think of it this may be a workable
solution. No reason it has to be stretched out straight, circle it around
the antenna. Hmm back to Ringo again.

Have you tried using coax for the caps, same as the cushcraft ringos?
I'm not sure how much power a cap made from say 213 would handle,
but it going to be several hundred watts at the min.. I've built what
you
are building. It will work fine, and the height above ground is not
that
critical. But I eventually changed the antenna to be a 40 GP and a
5/8 GP for 17m. I used a relay to switch the loading coil for 17m
in/out.
The "gamma loop" for 20m is kinda large, so you need some stiff tubing
to hold stable. IE: copper tube, etc..
MK