In article , NM5K wrote:

On 9/12/2012 7:12 PM, Fred McKenzie wrote:
In article ,
Channel Jumper wrote:

But I figure the Ring is probably 9 inches too shot - if the ring is 7.5
inches in diameter and needs to be 10 and the stub is too short - if it
needs to be 18 inches long and is only 6....

Channel Jumper-

You can get parts measurements for the various Ringo antennas at the
CushCraft website (Now part of MFJ!). For the Ten Meter version,
http://www.cushcraftamateur.com/Product.php?productid=AR-10. A user
manual is available by clicking on "AR-10 Downloads". I do not see a
Stub length given for the AR-10, but the AR-6 manual has a chart.

It's in the manual.. Was about 16.5 inches long with the RG-8
they use. They don't give the dia for the single turn coil,
but I've built a few of those, and used 18-20 inches or so dia.
Not real critical being it will be tapped appx mid way for a coil
that diameter. 7.5 inches dia is too small for 10m. Even 10 inches
would likely be too small unless maybe you tapped it near the end,
using almost the whole coil. I don't think I'd make it any less
that 15-16 inches dia.

I overlooked the stub in the manual I downloaded. Now I see it in the
Ring Assembly Parts, Key FF. It is 16 5/8".

Ring diameter is listed as 13" in a chart at the web link above. I do
not see size listed in the manual, where the ring is shown as two
similar pieces bolted together.

Fred
K4DII