About 20 years ago I did the DOG (dipole on ground) experiment) at my northern Indiana location. Many others have likely done their own DOG tests but my results were that the dipole needed to be shortened by nearly 50% to still be resonant when lying on the grassy soil at this location. Based on this data and wanting something that worked well I installed 1/4 wave radials for 80 meters AND also 1/4 wave for 160 meters. I figured if the short ones don't get you then the long ones will. FWIW, YMMV, de gary, kd9sv
-----Original Message----- From: Topband [mailto:[email protected]] On Behalf Of Michael Walker Sent: Friday, October 27, 2017 9:04 AM To: topband Subject: Topband: More on radials Here is my problem I am trying to solve. This is why I was asking about radials earlier. - I have a full length 1/4 - ish wire that runs over top a tall tree and the last 25 ft or so are horizontal - I can do elevated radials or lay radials on the ground - I'm not worried about SWR as I can dial that out later. - I have an 80m common feed point for a similar wire for 80M cw The antenna does work, but I can tell by the SWR 2:1 bandwidth I have significant ground losses now with 4 ground radials ~ 1/4 wave for each band (80/160) Thoughts and suggestions? Mike va3mw _________________ Topband Reflector Archives - http://www.contesting.com/_topband --- This email has been checked for viruses by AVG. http://www.avg.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
