In the 1970s-'80s (and maybe beyond), Antenna Specialists manufactured
a 5/8-wave high-band VHF whip that differed from the usual design.
Rather than incorporating the typical base-loaded match in a
waterproof housing, the radiator itself was formed into a coil of
about two turns with an approximate 2.5 inch diameter. Thus, the match
also served as a spring. I am looking for one of these, new or used.
K1JJJ.ae@ verizon.net