CAT: You can use the methods I mentioned regardless of frequency (60 Hz, MW, etc). It's up to you to provide the proper generator.
I use this: http://www.beecavewoods.com/testequipment/sinewave.html . I like it because it's simple, parts are readily accessible, and best of all it puts out enough RF so that I don't have to worry about bad readings due to strong local MW signals. (Or so I hope.....) Chuck -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles A Taylor Sent: Saturday, July 14, 2007 7:29 AM To: Mailing list for the International Radio Club of America Subject: [IRCA] was: Measuring D-C resistance of ground rods to earth At 10:30 PM 7/13/2007 -0700, you wrote: >Charles: > >You might want to do a Google for "three point method" and "fall of >potential". These are the two standard methods for measuring grounding >resistance. You should easily find tutorials from manufacturers of testing >equipment. > >EWE's are at or near the top of the list of antennas that are picky about >having a good ground. Were it my EWE, I'd follow standard RF grounding >practice and put it at least 3 8' ground rods separated by at least 5 feet. >With average soil or better, that should suffice. With poor ground, buy a >silver mine and install it under the antenna. Chuck, See my short-short reply to Larry Helms about this. I do want to try a metallic return and have enough wire on hand, and mean to try the concept...but not now because I have more urgent matters to tend. Anyway, the metallic return wouldn't be practical for a long EWE Mine is only 65 feet long. And even if I use the "fall of potential" method, it doesn't answer the question of the TRUE R-F RESISTANCE. Fall of potential is used by electric utilities, so I've looked it up before. The whole idea is that the far end termination may be possibly done by the inherent resistance of the wire. Thanks for you ideas. Chaz Charles A Taylor, WD4INP Greenville, North Carolina _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
