"Barett" wrote in message
...
Hi

I'm building a Carolina Windom 80 Special. 66 feet long (25ft one side
41ft the other with a 4:1 balun at the off centre, 10ft coax down to a RF
choke.

My question is. Can I use a FT200-2 RF Toroid wound with coax to make up a
choke to use as the choke?

Thanks


I made a mistake in the Toriod number. It is infact a T200-A.

I have found the answer I was looking for on a web site. See belowe. It
might help some one else with the same ideas of using this a choke.

My recommendation is to pick a different material. T-200-2 is a powered iron
material; the permeability is way too low to build an effective
coaxial-cable choke with. The AL value is 120 (meaning it takes 120 turns to
make a 100 uH choke).

You should be looking at ferrite, probably mix 31, 43, or 61. Mix 31
requires the fewest turns.

I have another question.

What is the T200-2 Toriod used for and why is it good for that purpose?

Thanks