On 9/13/2012 12:01 AM, Fred McKenzie wrote:


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


Yep, I see it now.. I was thinking it was slightly larger than that,
but maybe the original AR-10 I had was only 13 inches across.
They show the 6m version using the same part.. From the diagram,
it looks like about 2/3 of the turn is used on 10m.
Also, if I remember right, the 6m version used no coax cap for
tuning. I was looking at the 6m ringo PDF the other day.