Barry, I think you're dreaming. --- On Sun, 5/9/10, Barry <ate...@hotmail.com> wrote:
> From: Barry <ate...@hotmail.com> > Subject: RE: [Repeater-Builder] Commercial VHF antenna on 2m > To: repeater-builder@yahoogroups.com > Date: Sunday, May 9, 2010, 9:49 PM > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > What ever the radiator is one word springs to mind > which if adjusted correctly makes the harness much > less important and explains the vwsr imbalance > > Resonance > To: Repeater-Builder@ yahoogroups. > com > From: wa9...@arrl. net > Date: Sun, 9 May 2010 19:13:20 -0700 > Subject: Re: [Repeater-Builder] Commercial VHF antenna on > 2m > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Dave, > Is this a 154 MHz colinear antenna you are wanting to > use on 146 MHz or one like a DB 224 with 4 exposed > dipoles? > If the 4 exposed dipole type, just what makes you > suspect that there is "a lot of loss" when an > antenna made for 154 MHz is used at 146 MHz and how do > you expect to tune the dipoles without compensating for the > harness impedance matching sections mismatch also. > Allan Crites wa9zzu > > --- On Sat, 5/8/10, WA3GIN <wa3...@comcast. > net> wrote: > > > From: WA3GIN <wa3...@comcast. net> > Subject: [Repeater-Builder] Commercial VHF antenna on 2m > To: Repeater-Builder@ yahoogroups. com > Date: Saturday, May 8, 2010, 11:13 PM > > > > > > Hi folks, > > Several weeks ago I posed > the question of using a Commercial VHF antenna that was > resonant on 154Mhz on 146.745Mhz. We tried it today. > The SWR was a bit over 2:1 on the repeater freq. We > installed a T connector after the cans and used an open stub > to try to match the line...got it down to 1.5:1, > wouldn't go any lower. > > We think the height of the > antenna makes up for what we suspect is a lot of loss in the > antenna. The previous location of the repeater antenna was > 100ft ASL and this location is 525ft ASL. Maybe one day > we'll get a chance to retune the four dipole > antenna. > > Thanks to all that > provided ideas for this project. > > 73, > dave > wa3gin > > > > > > > > > > > > > > > > Find it at CarPoint.com. au New, > Used, Demo, Dealer or Private? > > > > > > > > > > > > > > > > > > > > > > >
