Are metalized polyester caps just as good as metalized polypropylene
caps?

Mylar caps are pretty good, but not as stable or as high @ as polystyrene.


OK John,

I didn't realize that a polyester cap was the same as a 'mylar' cap.
But, it makes sense now that I know.

Some polyester film caps are pretty inexpensive. I might have gone for
them if I didn't need all the Q I can get for this particular antenna.

Thanks for the tip and to all who commented.

T