The bandwidth of the SWR is a clue to how poor the ground system is. As you add radials the bandwidth will get narrower and the SWR is likely to change. At present it all looks like a big dummy load. When you think you have added enough radials double it again and measure parameters again.
73 Clive GM3POI -----Original Message----- From: Topband [ <mailto:topband-boun...@contesting.com> mailto:topband-boun...@contesting.com] On Behalf Of N4ZR Sent: 02 September 2019 19:08 To: topband reflector Subject: Topband: Inverted L redux More as an experiment and a thought-provoker than anything else, I've started adding 50-60-foot, on-the-ground radials to my 135-foot inverted L. In the latest incarnation I'm up to 4 radials. On my ancient MFJ-259B the lowest SWR is 1.3:1 at 1825 KHz, with an R of 77. X=0 (the 259B doesn't give the sign of j) from 1808 to1894, which I assume is roughly centered on the actual cross-over point. With my rudimentary knowledge of such things, I'm guessing that there remains something on the order of 50 ohms of ground resistance to be reduced for efficiency, through addition of radials. Question is, would I profit most by adding another 4 50-60 foot radials, or 2 radials each 100-120 feet? Comments appreciated. -- 73, Pete N4ZR Check out the Reverse Beacon Network at < <http://reversebeacon.net> http://reversebeacon.net>, now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. _________________ Searchable Archives: <http://www.contesting.com/_topband> http://www.contesting.com/_topband - Topband Reflector This email has been scanned by BullGuard antivirus protection. For more info visit www.bullguard.com <http://www.bullguard.com/tracking.aspx?affiliate=bullguard&buyaffiliate=smt p&url=/> _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector