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#1
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Frank Alforo wrote:
"But a bird can perch on my antenna wire while I transmit 100 watts and it stays there seemingly without a care in the world." Frank isn`t using enough power. I worked in a shortwave broadcasting plant filled with 50 KW and 100 KW DSB fully modulated transmitters. Our relatively flat transmission lines were of the 2-wire unshielded 600-ohm variety. These lines must have attracted countless tired migratory birds to alight or try to alight. When a bird would try to grasp a wire, it would instantly be consumed in a puff of smoke and steam. No carcass fell to the earth. Poof! it was gone. Many times their claws were left behind gripping the wire leaving us a record of the bird`s visit. Many wires were covered with bird claws. RF can kill more birds than cats can. Best regards, Richard Harrison, KB5WZI |
#2
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On 2006-06-26, Richard Harrison wrote:
bird`s visit. Many wires were covered with bird claws. RF can kill more birds than cats can. Maybe we can use this to distract people who claim wind farms are bird killers. -- Ben Jackson http://www.ben.com/ |
#3
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Okay silly question Richard
Did the birdless claws have any noticable effect on the match/tuning of the antenna? grin Cheers Bob Richard Harrison wrote: steam. No carcass fell to the earth. Poof! it was gone. Many times their claws were left behind gripping the wire leaving us a record of the bird`s visit. Many wires were covered with bird claws. RF can kill more birds than cats can. |
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