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|    AMATEUR_RADIO    |    Ham radio for when Armageddon strikes    |    2,531 messages    |
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|    Message 526 of 2,531    |
|    TOM WALKER to ROY WITT    |
|    Heathkit DX-60B    |
|    17 May 14 14:12:00    |
      RW>Here's a vertically polarized LPDA:                     RW> + what are these?       RW> | +       RW> | | +       RW> | | | +       RW> | | | | +       RW> | | | | |       RW> closed|------------+----feed point       RW> loop|____________+----feed point       RW> | | | | |       RW> | | | | +       RW> | | | +       RW> | | +       RW> | +       RW> + and these?                     Directly fed elements.       A normal YAGI only has one directly fed element.              The advnatage of the LDPA is increased bandwidth but at the expense of       antenna Gain.       But it does make it possible for a single antenna to be used with wider       range of frequencies at a reasonable SWR              Create sells 2 "similar"(the ones I was adressing in my previous       posts) antennas one with a 105 to 1300 MHZ bandwidth and another with a       50 to 1300 Bandwidth with a claimed 2.0 SWR or less       ---        þ SLMR 2.1a þ Typo Tom strikes agaoin        * Origin: TECHWARE BBS - Since 1995 - www.techware.dynip.com (1:102/401)    |
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