The GP9 I used on the repeaters was on a hill that was about 900 feet elevation. The problems didn't seem to make any difference regardless if the user was 2 miles out or 10 miles out.
I can not recommend a GP9 for UHF. ------ Original Message ------ Received: Sat, 09 Jan 2010 11:20:21 AM PST From: n...@no6b.com To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Repeater Rebuild Project Input > At 1/8/2010 23:39, you wrote: > >I used a Comet GP9 for about 2 years on a 444 Mhz repeater, then connected a 2 > >meter repeater to it. The 2 meter system performed FAR better than the UHF > >system. Both repeaters were nearly identical in performance otherwise, the GP9 > >simply performed much better on 2 meters. > > The GP9 does have significant nulls below the horizon on 440, so if your > repeater was on a mountain & you were trying to access it close-in, it > would appear to perform much worse than on 2 meters, where the gain is lower. > > The only GP9 I have on a mountain is used for TX only, so I don't care > about the close-in coverage. At 15 miles away the main lobe hits the ground. > > Bob NO6B > >
