[TowerTalk] Phasing transformer questions.

[Clint Talmadge W5CPT]

I am phasing two verticals together for 30M and using the Trifilar wound
toroidal transformer found in Joe Carr's "Practical Antenna Handbook" to do
so.  A friend, (more knowledgeable than I,) calculated 19 turns on a T300-2
core.  I recently found the core and now other questions have arisen.  

Does the winding have to be solid wire, or can I use stranded wire, or does
it matter?  And should the windings be flat wound, such as ribbon cable, or
twisted together? I have seen both methods. 

Any other information which I really need to know would also be appreciated.

 

Clint - W5CPT