On 9/5/2012 10:01 AM, Channel Jumper wrote:

This means I need to add another 7' to the antenna to get it to work on
27.200 MHz...

All I would need to do is figure out how long to make the stub match and
I would be set!

About 16.5-17 inches long with coax that has a .66 VF.
It's not too critical.
I'm not sure if the 6m ringo has a large enough gamma loop..
Maybe, if you used most of it.. If it won't match, you could
make a larger loop from copper tubing.
I make the loops from the tubing, then I hammer down the ends
of the tubing so they are flat, and then drill the holes in
the flat part so it can be attached to the mounting hardware.
With a little tweaking of the tap location, you should be able
to get a near perfect match. Don't bother trying to trim the
coax cap.. It's not that critical.. For most 10m half waves,
appx 50 pf is the usual value used. And that cap is actually
optional.. Note that the 6m version did not use a coax cap.
But I've always used one on the 10m ringos I've built.
I think it makes the tuning a little less touchy.