On Thu, 28 Aug 2008 22:35:32 +0100, Bubblesdee
wrote:

I think that all I need to do is come off the T2FD with 300 ohm Twin
lead

Fine enough.

and then into a 1:1 balun that does not use coax inside it but a
ferrite choke. Does this sound right?

Not as stated. Ferrite is a material, the line running through it
becomes choked because of that material.

my next question is
DOES anyone know how to build a 1:1 balun not using coax to transform
300 ohm balanced to 300 ohm unbalanced?

Stuff the (insulated paired) wires through the ferrite bead/torus/tube
just like you would a coaxial line. Total length of ferrite (a
combination of about 40-60 beads or equivalent) on the order of a
foot. A large torus can support several wraps through it to the same
effect.

73's
Richard Clark, KB7QHC