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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The pictured antenna came with a gamma match, but I didn’t have any luck (yet) getting it to work well around 442.5 MHz. The antenna may have been designed for 432 originally, I suspect.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have changed it over to a hairpin match (I hope), but the results are no better so far. Maybe it’s time to cut all the elements shorter by a few mm.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Or maybe I need more insulation between the 2 sides of the driven element or more spacing, etc.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I haven’t found a hairpin calculator to see if the one I made is too big (or too small). What is a good way to find out?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And if it helps, this is the UHF antenna I bought from SOARA from Hal’s estate.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks all for any suggestions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">73,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mike<o:p></o:p></p>
<p class="MsoNormal">K6MSM<o:p></o:p></p>
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