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<blockquote data-quote="Terryl" data-source="post: 1045472" data-attributes="member: 369937">It looks like NOAA 15 will be coming right over the UK in about 15 or so.NOAA 15 RX freq =137.6200 MHz.Now for some info, I have improved my antenna system bu going to a 1/2 wave setup, this makes it look like a cats whisker type of antenna.Using Analogs basic design you add two more sets of radials, all cut to the same length as the first, but all have a small bend right at the start where it connects to the coax, (will supply photos later) this bend is 120 degrees on all and the spacing between the main and ground radials is still 120 degrees.I tried to bend these as I said into an &quot;S&quot; curve but it got messy as to the layout, so they are kept straight.So the finished design will have two radials sticking up and two radials sticking down, all this is aligned Due North from the center of the antenna.Worked a bit better but I think I need a wider bandwidth on the receiver.[ATTACH=full]115778[/ATTACH]</blockquote>

[QUOTE="Terryl, post: 1045472, member: 369937"] It looks like NOAA 15 will be coming right over the UK in about 15 or so. NOAA 15 RX freq =137.6200 MHz. Now for some info, I have improved my antenna system bu going to a 1/2 wave setup, this makes it look like a cats whisker type of antenna. Using Analogs basic design you add two more sets of radials, all cut to the same length as the first, but all have a small bend right at the start where it connects to the coax, (will supply photos later) this bend is 120 degrees on all and the spacing between the main and ground radials is still 120 degrees. I tried to bend these as I said into an "S" curve but it got messy as to the layout, so they are kept straight. So the finished design will have two radials sticking up and two radials sticking down, all this is aligned Due North from the center of the antenna. Worked a bit better but I think I need a wider bandwidth on the receiver. [ATTACH=full]115778[/ATTACH] [/QUOTE]

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