The amount of dielectric coating applied, type of dielectric material selected, and method of {TAIL ~ application} is a matter of {HEAD ~ design choice} which depends on the level of D.C. blockage desired and the desired operable RF frequency range 
The amount of dielectric coating applied , type of dielectric material selected , and method of { TAIL ~ application } is a matter of { HEAD ~ design choice } which depends on the level of D.C. blockage desired and the desired operable RF frequency range
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH