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#1
July 19th 11, 11:37 PM
posted to rec.aviation.soaring
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Tuning a Rainco antenna
I have a Rainco ground station antenna I bought from Graham Thompson
about a millennium ago. The construction is 2' of 1" diameter aluminum tube at the bottom with a 4' whip on top. The coax attaches at the base. My problem is it's VSWR at 123.3 is 2.5; at 118.1 it's only 1.5. I'm assuming it's too long, but maybe there are coils or such inside that do the adjustment. Does anyone know how to tune this antenna? -- Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me) - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl 
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