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> > "Guy Olinger, K2AV" wrote: > > > > Don't bother to measure anything with the antenna horizontal at 6 feet. > > You will get weird readings. About the only thing you can check reliably > > there is whether your coax is really hooked to the driven element, or if > > your balun is open-circuited. > > > > For an antenna that small, some have suspended it from a tree, or rope > > between trees, pointing up, with the reflector closest to ground to > > check out SWR before putting it up. But don't lay the reflector on the > > ground. Get it up six plus feet. > > > > Then check it out UNDER POWER using a regular swr bridge. (A huge amount > > of stuff in Tower Talk archives about the little analyzers being > > bothered by either BC interference or odd coupling to the coax shield.) > > > > If you mount a beam directly over a house on a tripod, you may get some > > odd readings you didn't get when you had the beam hung up for checking. > > The house has a lot of wire which may couple depending on how far above > > the roof it is, and move the SWR around. > > > > But remember: SWR does NOT equal performance. SWR does NOT equal > > pattern. If it's a little off on swr on your tripod, but the pattern is > > good, either ignore it if your transmitter loads it, or use a tuner. If > > SWR is WAY off, you have a problem > > > > Good Luck! > > > > - - . . . . . . - - . . . . - - . . - . . > > > > 73, Guy > > k2av@contesting.com > > Apex, NC, USA > > > > ----- Original Message ----- > > From: Roger Doran <doran@bigfoot.com> > > To: <force12talk@qth.com> > > Sent: Sunday, May 21, 2000 7:21 AM > > Subject: [Force 12 Talk] C3SS Questions > > > > > Hi all; > > > I have a new C3SS - built, but still mounted only 5' off the ground > > for > > > easy adjustment and settings. Do any of you have any hints or tips > > > before I raise it to the roof for mounting on a tripod (no easy task)? > > > I think it's great - was well marked, is well made - has some > > confusing > > > directions about the loading and some more on which tips you can > > change > > > the spacing on for VSWR though I have no idea of how one would do this > > > once it is mounted, nor how effective - read "accurate," it would be > > at > > > 6' off the ground. > > > TIA for any suggestions. > > Hi Guy; thanks for the quick response - I got 2 - maybe you pushed Send > twice, or just wanted to emphasize your point, Hi, :-) I was really More > concerned with Hints and Tips. Thanks for the suggestion to haul it up > vertically I may have a tree that will do that. > > Other concerns were that I found one element drilled incorrectly- The B > side was fine, but the A side the tip didn't match and the length was > off. This was element 2- the 15 meter reflector- the "A" tip was 1/2 and > inch off and so was the .500" inch section and as I said the "B" side > was fine. > Also the studs on the "A" side of Element 1 are rotated 10 to 15 degrees > counter-clockwise and the same thing on Element 6, but on the "B" side. > Other than that, all was fine - am going to call and see if Tech can > supply any info about the studs and element 2's problem. Just found that if I set the feedpoints on Elements 1 and 6 at 45 degrees as mentioned on page 11, item 7b and shown on the Feedpoint Detail page; that the loading then also shifts to 45 degrees - is that right? I thought the loading should be horizontal. > Again, thanks for the quick response. Oh yes- the studs that are off > horizontal have the markings lined up >< > > > -- > > > Roger Doran, W1MZA, On > > > The RockBound Coast of Maine > > > So Much To Learn........ So Little Time........ > > > -- > > > > > > > > > -------------------------------------------- > > > Force12Talk mailing list provided as a service by Force 12 Antennas, > > Inc. > > > Force 12 Web site: http://www.qth.com/force12 > > > > > > Submissions: send to Force12Talk@qth.com > > > To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com > > > Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk > > > For problems with the list, contact force12@qth.com > > -------------------------------------------- > Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. > Force 12 Web site: http://www.qth.com/force12 > > Submissions: send to Force12Talk@qth.com > To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com > Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk > For problems with the list, contact force12@qth.com -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact force12@qth.com |
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