Rig them as inverted vee antennas with the center at the tower. --wunder, K6WRU
On May 25, 2014, at 6:14 PM, Joshua Gould <jg.k8...@gmail.com> wrote: > The problem with any wire antennas, (as you can see on this map > https://goo.gl/maps/MFdXQ) is a complete lack of places to attach the ends of > the dipole to... The property is long and thin, but is also very open... The > only trees are at the back of the property, and would be hard to climb. Per > the Landlord (not the XYL,) I am not allowed to attach anything to the > house... > > Joshua Gould > K8WXA > > > On Sun, May 25, 2014 at 8:56 PM, Walter Underwood <wun...@wunderwood.org> > wrote: > That is several very big questions, and enough that I suggest getting a copy > of the ARRL Antenna Book and reading before spending much money. And talking > to a lot of hams that already have towers. > > Multi-band Yagi antennas are multi-band, but not wideband. They are tuned for > specific bands, like 20m or 15m. They do not work well on bands they are not > designed for. > > A vertical on a tower might give a few dB of gain (on the bands it is > designed for). A Yagi (beam) will typically give 10dB or so of gain on each > band it is designed for. > > The G5RV works for a lot of people, but it is a compromise on many bands, and > could cause problems when run with high power (500W). > > Since you are going to the bother of putting up a tower, I'd also put up > dipoles cut for most of the lower bands and feed them from a common point. > This is called a fan dipole or parallel dipole. If you'd like that pre-cut > for you, I recommend Hy-Power Antenna (http://www.hypowerantenna.com/). > > wunder > K6WRU > http://observer.wunderwood.org/ > > On May 25, 2014, at 5:31 PM, Joshua Gould <jg.k8...@gmail.com> wrote: > > > Ok, I know that this is a topic much like the Ford vs. Chevy debates or the > > Android vs. Apple debates, but I do have a few questions... > > > > I am going to be acquiring a 56 foot Rohn BX tower. I already have a G5RV > > that I am planning on putting up (still not sure where I'm going to attach > > the other end of it to, One end will go on the tower.) I'm going to put up > > a 2m/440 vertical at some point up near the top of the tower. I keep > > throwing around an HF vertical or a beam. The verticals seem to cover more > > bands, but the beams are directional. (Would also need a rotor,.. > > > > Can a multi band yagi be tuned to a different band, or will it only work on > > the bands that it's designed for? > > > > I'm thinking long term and I'll probably be adding a K3/100 with a KPA500 > > to the mix in the next year or so... Trying to figure out what will give > > me the best bang for my buck, so to speak. > > > > 73, > > Joshua Gould > > K8WXA > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to wun...@wunderwood.org > > -- > Walter Underwood > wun...@wunderwood.org > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jg.k8...@gmail.com > -- Walter Underwood wun...@wunderwood.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
