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Old June 26th 06, 05:02 PM posted to rec.radio.amateur.antenna
Richard Harrison
 
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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

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Old June 26th 06, 05:25 PM posted to rec.radio.amateur.antenna
Ben Jackson
 
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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/
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Old June 26th 06, 07:27 PM posted to rec.radio.amateur.antenna
Bob Bob
 
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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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