the vhf has 140 - 160 1.7:1 end to end and 144- 156 mhz 1.3:1 , uhf had , (collar down) 420 -440 1.4:1 end to end , and 430 -438 1.3:1 , ( collar up) 440 - 470 1.7:1 end to end , and 441- 449.800 1.3:1
checked witha 5 watt HT and the swr meter attached to the antenna , and a 2 ft jumper from meter to HT Russ N3TIH ----- Original Message ----- From: "skipp025" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Tuesday, April 06, 2004 4:43 PM Subject: [Repeater-Builder] Re: Ringos, Diamond, Comet & Hustler Antennas > > "Admin" <[EMAIL PROTECTED]> wrote: > > i picked up a workman uvs-300 for $55 , its the > > same antenna as the diamond XMa-510 , 11.3 > > db on 440 and 8.5 db on 144 , and so far we have > > thrown up to 50 watts uhf into it and have > > worked 440 machines about 100 miles away > > Have you checked the bandwidth of the antenna? The > Fc of the last Diamond DB ant I checked was about > 446.3Mhz. The reflected power at 440.000 was in > excess of 2:1 Our Repeater Tx's are on the low > side of the band. > > 2:1 is not a value we choose to use for a repeater > Tx antenna. > > > we have a GE progress line uhf repeater , > > and it had a bad TX strip , it puts out about > > 3/4 to 1 watt into a phelps dodge duplexer > > This is a recipe for big time trouble... > > > ..and well that eats power , and still feeding the antenna > > with the same rg 58 , the output after the cans is > > milliwatts ,and feed milliwatts through rg 58 , i know > > stupid , that repeater with that uvs 300 antenna , has > > a 9 mile talk range to mobles in the hills and > > base radios at almost 12 miles , on milliwatts. > > Most people are surprised to learn how well small amounts > of power work. When Taxi cab company rf power amplifiers > fail, I'd often run them on the 150mW exciter for a day. From a > large building or nearby mountain top, 10 mile radius temp > coverage was pretty easy. > > > I recomend this dual band base antenna to anyone, I > > know it hasn't had a popular review , but I still bought > > one and it has out done any antenna i have built or > > purchased hands down, so if your looking for range > > on a low power setup, this is a way to go. > > Workman UVS -300 > > 200 Watt Capicity > > 239 mount , not an N unfortunately > > 17.6 ft tall 3 piece fibre glass > > adjustable ground plain sleeve > > > > I hope this will help in anyone's ideas for repeater > > or base antenna > > Russ > > N3TIH > > If you have a chance to measure the antenna bandwidth, > report back with your results. We're always interested > in other antenna options. > > Cheers, > skipp > > > > > > > Yahoo! Groups Links > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/