In addition to otherwise stated by K5AMH, as the frequency gets much higher incrementally smaller inductance value is required (wider spacing, turns-per-inch on a given coil diameter) and smaller incremental change is needed to fine-tune if it were.
On Sat, Jun 25, 2022 at 11:14 AM Michael Giannaccio via BVARC < [email protected]> wrote: > This is probably a basic question but I’ve come up empty in my search and > can’t seem to find the answer in the Antenna Book. > > Can someone explain to me or link me to some reading as to why some roller > inductors and screwdriver antennas like the ATAS have less turns per inch > on the ends of the coil and more towards the center? I do have the latest > edition of the antenna book so if it’s in there I can look it up. > > > > > > Thanks! > > 73, > > Mike Giannaccio > W5REZ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ >
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