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Old July 10th 06, 07:42 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jul 2006
Posts: 137
Default DDRR antenna

That's not high enough Q Roy.

C'mon, I can only pass CW and PSK31 signals through mine without
appreciable distortion.

Who needs to use SSB?

....

I did build one for 440MHz once though. Just a gap where the cap goes.
It was one of the 2 ring types; about 1/2 inch spacing. and I could
hit some repeaters with it... I could also hit some repeaters with one
of those mini duckies too... not much to recommend the DDRR.

I think if you're raring to build a vertically polarized, fairly low
profile antenna and you have a big supply of fat copper pipe and a high
voltage, high current, all welded split stator cap, you could build
yourself a fierce magloop.

Still have to retune every time you QSY... and I dunno... for similar
construction quality and materials, how's the efficiency of the DDRR
vs. the magloop? How low is the low radiation resistance of the DDRR?


73,Dan

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