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June 2nd 09, 08:20 PM
posted to rec.radio.amateur.antenna
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"Large" volume antenna
On Jun 1, 2:42*pm, Art Unwin wrote:
I have just made a larger than usual antenna that radiates well below the broadcast band so I may study generated radiation patterns. The antenna is on a structure that rotates as well as a tipping action, all *about 4 feet above the ground. Initially I will just listen to signal variences when aim and tilt is in the best position. I recognise that I may have to put a digital meter across the S meter terminals together with a holding capacitor but for the moment I will be guided by the S meter. On the upper frequencies I will hook up to a TV for a visual. SWR readings will be initially recorded across all frequencies in the horizontal position to be used as a datum which certainly be required as shielding is added in the near future. *Comments? Regards Art My cat has mittens. :/ |
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