To: | tentec@contesting.com |
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Subject: | Re: [TenTec] Radials |
From: | Mike Gorniak <gorniak@ncis.com> |
Reply-to: | tentec@contesting.com |
Date: | Wed, 09 Jun 2004 19:30:04 -0500 |
List-post: | <mailto:tentec@contesting.com> |
Gary, To clarify, I was referring to Field Strength, measured in Millivolts per Meter, which is the standard expression. It takes 6 db to double the measured signal strength, which is equivalent to one "S" unit. 3 db would translate to One Half of an "S" unit, still significant, but not double. Also, I used the term "within 3 db". Actually, the 2 times that I tried this experiment, the results were 2.4 and 2.1 db improvement in Field Strength when adding 90 (not 60) quarter wave radials to the existing 30. The Field Strength was measured using a Potomac FIM 41 Field Strength meter on a dozen monitor points at distances of 1 to 3 miles from the antenna. I stated "within 3 db" to make sure that I was positively accounting for measurement errors, including the meter's plus or minus 5 percent certification, environmental factors, such as power lines, railroad tracks and ground conductivity, as well as operator error. 73. Mike NM7X Date: Mon, 7 Jun 2004 23:07:39 -0400 From: "Gary Hoffman" <garyhoffman@spacetech.com> Subject: Re: [TenTec] Radials To: <tentec@contesting.com> Message-ID: <002201c44d05$c5a84110$6301a8c0@aa2iz> Content-Type: text/plain; charset="iso-8859-1" _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec |
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