I have a KX3 instead of a KX2, but I frequently go out in the field to play radio at local parks and other scenic spots. I have a number of antennas, but one of my favorites is one I built recently, a link dipole for 40, 30, and 20. It's tuned for the CW portions of the bands, so it doesn't need much tuning, but if I want to work phone I hit the internal tuner just to tweak it a little bit. I suspend it on top of a 20-foot telescopic fiberglass pole from SOTABeams, secured in a drive-on mount and held down by one of the tires of my E-150 conversion van. I run it in inverted-V configuration, using stakes or photographers' sandbags at the far ends if the location doesn't like stakes.
I didn't bother with baluns or anything. I just wired the coax to the midpoint and trimmed it up that way using an analyzer. I get good results with it on CW or phone, easily going from the Philadelphia suburbs to the Michigan Upper Penninsula on 40m phone with 10 watts. If I find that I'm getting stray RF, I have a big isolator choke I can run the line through that clobbers it nicely. 73, Gwen, NG3P On Fri, Oct 11, 2019 at 6:55 AM CUTTER DAVID via Elecraft < elecraft@mailman.qth.net> wrote: > I'd like to suggest that one very good reason for using centre-fed and > external matching unit is because the harmonic pickup from nearby stations > is much reduced compared to multi-band antennas. This is best implemented > when the antenna is as near perfectly balanced as possible to avoid > feedline pickup. A *proper* choke to cancel out-of-balance currents should > be helpful in this regard. > > For single station field days, I've used the Spiderbeam 807 off-centre-fed > inverted V dipole on a f/g pole which is a fast way to get on air without > an external matching unit to fiddle with. Common mode current is virtually > zero. It's a great solution for beginners reducing the fiddle factor, ie > plug and play KISS. Less to carry out into the field as well. > > David G3UNA/G6CP > ______________________________________________________________ > 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 ard...@gmail.com > -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.net ______________________________________________________________ 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
