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Antennas, Feedlines, Towers & Rotors
/////////////////////////////////////////// Best antenna for 6m I can hide in my attic Posted: 23 Feb 2017 11:20 PM PST http://forums.qrz.com/index.php?thre...-attic.556636/ Im looking for a 6m anntenna I can hide in my attic as my wife is already a little short with me about the other antennas for my 2m/220/440 radios. thanks /////////////////////////////////////////// EFHW-8010 Best DX take off angle Posted: 23 Feb 2017 09:52 PM PST http://forums.qrz.com/index.php?thre...-angle.556666/ Hi there all, I posted about this antenna a while ago about raising the height slightly to improve performance. I have this set up as a sloper about 14ft high sloping down to about 6ft at the low end. This antenna is 130ft long. My question is what angle do I have this at? I was told its at a too high an angle for dx and most of my power is shooting up too high for DX. If I lowered the 14ft height I would be lowering my take off angle, so whatever the best angle is then so how high should my... EFHW-8010 Best DX take off angle /////////////////////////////////////////// Double duty from a 2 el 20m vertical phased array Posted: 23 Feb 2017 08:41 PM PST http://forums.qrz.com/index.php?thre...-array.556658/ Been using $15 fiberglas fishing poles with #14 wire taped to them and 4 qtr wave radials to build monoband GP antennas for some years now. Am on 10, 17, 30, and 40 m that way working/chasing DX, with excellent results. I then added a second 40m GP spaced 1/4 wave and a relay per ON4UN, to give me fat cardioid lobes NE or SW with even better success on 40m. Now, with the current sunspot cycle winding down I decided to do the same thing for 20m, only this time using... Double duty from a 2 el 20m vertical phased array /////////////////////////////////////////// Vibrating ropes Posted: 23 Feb 2017 06:36 PM PST http://forums.qrz.com/index.php?thre...-ropes.556622/ Ive got this 50 rope up to a tree just outside the bedroom, it goes over a tree branch and the other end comes down to a 15 lb rock. I keep it tied off to the deck railing, and it always tightens up with the branch swaying and all even though Ive got the rope going over the branch with a piece of irrigation tubing. When it gets tight, it starts singing like crazy in the wind. Ive tried tying it in places to a close by pipe, but all that does is change where it vibrates from. How do I... Vibrating ropes /////////////////////////////////////////// ASL-2010 Cushcraft issue Posted: 23 Feb 2017 05:05 PM PST http://forums.qrz.com/index.php?thre...-issue.556644/ My swr jumped to 3 on 20 meters but is perfect on all other bands but I cant use my amp now even on the bands its 1:1 on without getting RF back in the Shack. So my feedline has an issue or maybe the matching network box on the antenna ? Anyone ever had this issue with this antenna ? /////////////////////////////////////////// EFHW antenna analysis Posted: 23 Feb 2017 12:03 PM PST http://forums.qrz.com/index.php?thre...alysis.556138/ Please find an interesting analysis of EFHW antenna by KX4O at Hamradio.me http://www.hamradio.me/antennas/of-f...eedpoints.html http://www.hamradio.me/antennas/disp...-currents.html 73 Danny E73M P.S. I expect the Dave, KD6RF to post the reply to this with his usual harassment, libel and defamation post containing references not related to this topic. |
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