[BC] vaporizing birds

[Bruce Doerle]

I have never seen a bird vaporized, and we had 500 kW TXs at sites I
have worked at.  I have seen a few birds have their feet burned off, but
none explode or vaporize.  BUT shortwave has significantly less energy
absorbsion than at VHF and UHF frequencies.  It might be possible for a
bird to fly into a beam and be killed, but I would be surprised that it
could be in the beam long enough to blow up.    


>>> jvodenik at sosinet.net 9/29/2006 1:22:40 AM >>>

Now you have my attention.......working with 250,000 watts every day,
I
have NEVER seen a bird vaporize.  I have seen them explode as such,
and
fall off the lines in many pieces.  Granted I haven't read the
mentioned
articles as yet.  I even have a picture of an unlucky owl who was on
the
wrong line at the wrong instant.

John @ VOA / Delano
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-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of Bob Barnswatts
Sent: Thursday, September 28, 2006 7:23 PM
To: Broadcasters' Mailing List
Subject: [BC] vaporizing birds

Two stories in two days told wild tales of "birds vaporizing" by the
RF
field or by landing on a feed line

"The antenna on top of the 1500 ft tower was a 72 ft "candlestick"
that
transmitted a television signal strong enough to vaporize a bird if it
happened to fly too close to it..." 

ref:   http://www.oldradio.com/archives/warstories/1572feet.htm


Regarding XEROK  :  "The transmission feed was 'open line'. 150,000
watts would flow and hum across the cables connection the antenna to
the
transmitter. Birds would land on the line and in a flash they would be
vaporized - only a handful of feathers would float to the ground. "

ref:  http://www.reelradio.com/km/index.html

Now I ask you if this is true?  I find it very hard to believe but
admittedly haven't seen it happen myself nor been around 150KW AM
transmitters or standing directly next to Hi powered TV antennas.



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