Vinnie S. wrote:
What size loop and how many turns should I use to create a RF choke with my
coax, right before the antenna?

Vinnie S.

8 to 10 turns on an 8 inch form, remove the form, with RG-8X or similar
"mini" coax. 6-8 turns with RG-8 or 213.

HTH

-SSB