tag:blogger.com,1999:blog-3676983452144254088.post2818537650963060897..comments2024-03-21T21:22:58.080+01:00Comments on PE4BAS Amateur Radio Weblog: Experimental vertical antenna - elevated radialsPE4BAS, Bashttp://www.blogger.com/profile/12958141238330445285noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3676983452144254088.post-28177800006167981942019-02-04T12:39:56.704+01:002019-02-04T12:39:56.704+01:00Hello John, of course I'm no expert in vertica...Hello John, of course I'm no expert in vertical antennas. Yes, elevated 2m above ground would be something. Still I think a vertical works best when free standing, no buildings with iron in it around like it is the case here. I will look into a half sloper again (have been using it many years ago on 160m with reasonable results). I've been using FT8 as test mode. Tested it various times and improvement was there when I elevated the radials, for receive that is. Not for transmitted signals. Remember that a antenna could work at one location and could be worthless at another. So far nothing beated the multiband inverted-V yet here. About the matching of the vertical without tuner, I don't know, actually it doesn't interest me much since it was intended for multiband use. Do you think a resonant antenna on 60m would do much better? I doubt it... 73, BasPE4BAS, Bashttps://www.blogger.com/profile/12958141238330445285noreply@blogger.comtag:blogger.com,1999:blog-3676983452144254088.post-15662212028221670942019-02-04T10:03:47.570+01:002019-02-04T10:03:47.570+01:00Now I had a chance to read the N6LF paper. I don&...Now I had a chance to read the N6LF paper. I don't think I'll save it for future reference! I'd suggest reading the ARRL Antenna Book, or 'More Vertical Antenna Classics' for a clear, considered and practical discussion on verticals, their radials, and their performance. <br />Photonhttps://www.blogger.com/profile/10137649851898638015noreply@blogger.comtag:blogger.com,1999:blog-3676983452144254088.post-31537976257126706372019-02-04T09:43:00.865+01:002019-02-04T09:43:00.865+01:00As you know, Bas, I use verticals a lot. When we ...As you know, Bas, I use verticals a lot. When we talk about elevated radials, usually this means something like 1.5-2m above ground (this usefully allows people to walk under them!) With good quality ground conditions, there is no need for more than two radials. <br /><br />For sure, you will need to run a test for a much longer period of time to get a meaningful comparison. Not sure what mode you are using for tests, but WSPR during the contest-free weekday period is the only way to gather a sufficiently large data set.<br /><br />What is the natural matching of the vertical, without the tuner? Can you show us an analyser plot? If you have to make use of the tower, a half sloper will almost certainly work better, with the added advantage that radials can be buried around the tower, rather than elevated like a spider's web!<br /><br />I have never found an inverted-V to be a satisfactory antenna in comparison to any other antenna deployed here.Photonhttps://www.blogger.com/profile/10137649851898638015noreply@blogger.com