Balun Designs, both 1:1 and 4:1 for use with tuners. I have both because I also have a folded dipole that I feed direct.
I suggest you give the folks at Balun Designs a call and discuss your exact needs. Take their advice. Also see the DJ0IP site for details on baluns. Just Google DJ0IP. And I use the 8232 common mode choke from The Wireman. 73 Bob, K4TAX Sent from my iPhone > On Dec 8, 2018, at 9:35 PM, Don Wilhelm <donw...@embarqmail.com> wrote: > > Robert, > > That depends on what you want to achieve. If it is more gain broadside > (perpendicular to the antenna) then the answer is yes. On 80 meters the 160 > meter elements alone will be Two Halfwaves in Phase and will have 2 to 3 dB > of gain broadside to the antenna. > > Of course, that gain comes at a cost of radiation in other directions. L.B. > Cebik (SK) explained it best - if you visualize the radiation from an > isotropic antenna as a balloon, then squeeze that balloon so the largest > projection is in the direction(s) of the gain, you will see the reduction of > gain in other directions. In other words, there is no free lunch. For the > dipole, squeeze the balloon in the middle a bit, and for 2 half-waves in > phase, squeeze it a bit harder. > If you want to achieve the maximum squeeze, change the length of each half of > the radiator to 5/8 wavelengths and you will have the greatest broadside gain > before the radiation pattern breaks into multiple lobes. > > You can find that basic information in most any good antenna handbook. It is > the basis for all wire gain antennas. > > For rotatable arrays or other directional switchable arrays, that balloon > effect is exactly what is desired, but for a fixed wire antenna, that balloon > effect may not be desirable if you want to work stations that are off the > ends of the antenna. > > So the answer is -- it all depends. Do you want to orient your antenna to > favor certain locations, or do you want something more or less > omnidirectional. An Inverted Vee will be slightly more omnidirectional than > a horizontal dipole. A vertical is an omnidirectional antenna with a > circular pattern, but normally with a lower take-off angle than a dipole at a > modest height. > > If you want to work nearby stations as well as those further away, use a > dipole - if you want to work DX (which usually comes in at low elevation > angles, use a vertical. > > 73, > Don W3FPR > >> On 12/8/2018 10:03 PM, Robert G Strickland wrote: >> Ron... >> Would such an antenna cut for 80m, fed with ladder-line, and used on 40m, be >> a better performer on either band than an 80-40m fan dipole fed with 72ohm >> coax? Leaving all other extraneous but influencing parameters aside. I have >> the second antenna; the weight of all that wire and the coax with a ferrite >> balun results in a significant sag. I'm wondering if the first antenna, >> lighter and higher in the air, would perform better? Thanks. > ______________________________________________________________ > 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 rmcg...@blomand.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
