Do you expect to EVER allow other, non-ham users, to multi-couple to this antenna? Plan carefully. If you anticipate to share, then the bandwidth become very important. For example, a Sinclair 210C Series antenna has a 36 mHz, 1.5:1 VSWR bandwidth, essentially covering the whole VHF high band. A Sinclair 222/224 Series has a 10 mHz 1.5:1 VSWR bandwidth. A Sinclair 229 has a 6 mHz, 1.5:1 VSWR bandwidth. UHF follows a similar set of numbers. If you expect to never allow other users on the antenna, then my comments are irrelevant.
lh On Wed, Jun 23, 2010 at 9:36 AM, Chuck Kelsey <wb2...@roadrunner.com> wrote: > > > I'm assuming you mean the section of the particular band that a particular > model will cover. 'Most' folded dipole arrays and collinear fiberglass > manufacturers have models that cover the entire ham band in question, and > then some. > > Chuck > WB2EDV > > > > ----- Original Message ----- > *From:* Larry Horlick <llhorl...@gmail.com> > *To:* Repeater-Builder@yahoogroups.com > *Sent:* Wednesday, June 23, 2010 9:17 AM > *Subject:* Re: [Repeater-Builder] Re: Antenna Experience Needed! > > Keep in mind the bandwidth of the antenna. > > lh > > On Wed, Jun 23, 2010 at 9:09 AM, Sid <purvis...@yahoo.com> wrote: > >> >> >> >> My choice would be the DB-224 type. Sid WA4VBC >> >> --- In Repeater-Builder@yahoogroups.com, "Chuck Kelsey" <wb2...@...> >> wrote: >> > >> > My vote would be for folded dipole arrays. Sinclair, Comprod, Telewave >> and >> > Andrew make good ones. I have seen far too many failures with fiberglass >> >> > collinear antennas - lighting and particularly internal failure causing >> > untold noise generation to the repeater itself as well as to every radio >> >> > service nearby. I've never seen a fiberglass one that stood a direct hit >> but >> > have seen folded dipoles that did. I'd say at least a 3:1 failure rate, >> > maybe higher. That said, any can fail. >> > >> > Chuck >> > WB2EDV >> > >> > >> > >> > >> >> > >> We will be mounting 2 meter, 220, and a 440 repeater antennas. >> > >> >> > >> 1: >> > >> What do you recommend between a choice of either RFS or Telewave >> > >> Superstation Master Type or DB224E Dipole type for top mounting? >> > >> >> > >> >> > >> >> > ------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.829 / Virus Database: 271.1.1/2957 - Release Date: 06/23/10 > 02:36:00 > > >
