Added comment... I have seen variations on element lengths and harness designs over the years. For some reason Decibel made changes here and there. One note I have states that for the ham cut, the dipoles are 18.5" from tip to center of element boom (both ends being the same length), or 37" overall tip to tip length.
Chuck WB2EDV ----- Original Message ----- From: "Chuck Kelsey" <[email protected]> To: <[email protected]> Sent: Saturday, April 24, 2010 9:28 AM Subject: Re: [Repeater-Builder] DB224 antenna question. >I believe that it's because the center conductor at the feedpoint (where it > attaches) becomes part of the length for the upper portion of the element. > > Your real challenge may be the feed harness. You may need to construct a > new > one, unless you get lucky. > > Chuck > WB2EDV > > > > ----- Original Message ----- > From: "NORM KNAPP" <[email protected]> > To: <[email protected]> > Sent: Saturday, April 24, 2010 8:18 AM > Subject: [Repeater-Builder] DB224 antenna question. > > >> Hi group. >> I am working on some db224a folded dipole elements. I have cut them and >> have added smaller tubing inside in order to make them longer for proper >> resonance on 2m. I have measured several factory dipoles and have noticed >> that the length from the bend of the loop to the support tube on the feed >> side is shorter than the closed/non-feed side. Why is this? Is there a >> ratio I need to know about? >> As soon as I get the proper lengths figured out, I am going to weld >> everything in place. >> Thanks es 73m >> Norm >> >> >> ------------------------------------ >> >> >> >> Yahoo! Groups Links >> >> >> > > > -------------------------------------------------------------------------------- > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.814 / Virus Database: 271.1.1/2831 - Release Date: 04/23/10 > 14:31:00 > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2832 - Release Date: 04/24/10 02:31:00
