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Re: Topband: Relationship Between Ground Wave and Low-Angle Radiation

To: topband@contesting.com
Subject: Re: Topband: Relationship Between Ground Wave and Low-Angle Radiation
From: Michael Tope <W4EF@dellroy.com>
Date: Fri, 13 Sep 2019 10:02:12 -0700
List-post: <mailto:topband@contesting.com>
On 9/13/2019 6:31 AM, N4ZR wrote:
I don't think I've ever read anything on this topic.  Basically, what I'm asking is, could ground wave to a fairly nearby Skimmer be used as an analogue to low-angle radiation to assess the effectiveness of radial systems on an inverted L?  W3LPL is about 30 miles from me and has a very capable Skimmer Server-based RBN node.

Hi Pete

Perhaps you could try some RBN tests without changing anything significant on either end of the system over a period of time just to see if you can get a stable baseline. A transmit beacon on a timer that lets it transmit from 11:30 AM to 12:30 PM every day for a month would give you a pretty sizeable dataset. Then you could pull down the RBN records to see how much variability there was in signal strength over a large set of measurements.

73, Mike W4EF..............................
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