Yes, that's also another reason for the increased spacing. Gary K5AMH
On 6/29/2022 9:00 AM, Joseph Benoit via BVARC wrote:
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]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.orgPublicly available archives are available here:https://www.mail-archive.com/[email protected]/
-- Gary Sitton, K5AMH [email protected] SDR/DSP Consultant, "Have FFTs, Will Travel."
________________________________________________ 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]/
