John Smith wrote:
[...]

Actually, the brass pipe is 2+ inches in ID. Substantial stuff,
apparently came from "fire house", bar, or ????

Will do a true coaxial tank, then a coaxial tank tuned with a var. cap.,
and then a helical resonator ... that should cover the subject.

First thing I am planning is a tank circuit for the FM broadcast band,
nice freq there ... a bit above HF and a bit below uhf ... and, even a
cb'er might appreciate the effort! GRIN

Regards,
JS
a