"John Smith" wrote in message ...

Knowledgable advice much appreciated.

Why do you have this choke at the feed point?


A J-Pole is inherently a balanced antenna (half-wave dipole) fed with a
quarter-wave matching section. To feed it with unbalanced line permits
common-mode currents on the outside of the line. Coiling the coax to make a
common-mode choke is a practice recommended in the ARRL literature (and
probably other places) to prevent the currents from traveling on down the
line to the source.


Thanks for explaining it to the "expert".





If the antenna had an intermittent problem, I suppose the choke could have
taken the brunt of the incident power and melted.

It would be good to know if the melting occurs again without the
intermittent condition. If so, the OP will require help from a more
knowledgeable source than myself.


Well this is what i need to know, can i get away without the inductive loops?





(Could the melting have been caused by the origional installation
soldering?)

Ask where are these magnitudes of current generated, and why.



Ask yourself why you answered when i wanted knowledgable advice.


Slick