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Index of Subjects -------------------------------1253358662 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit While not a radar expert, I have found that birds show up quite well on high frequency marine navigation radars if they are close and the radar is tweaked. There are high frequency avian radars at many major airports specifically designed to pick up flocks of birds and that is what they may have used. Weather radars are I believe for the most part Pulse doppler specifically designed to pick up moving precipitation. Peter Stow Hubbards -------------------------------1253358662 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; charset=3DUS-ASCII"> <META content=3D"MSHTML 6.00.6001.18294" name=3DGENERATOR></HEAD> <BODY id=3Drole_body style=3D"FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY= : Arial"=20 bottomMargin=3D7 leftMargin=3D7 topMargin=3D7 rightMargin=3D7><FONT id=3Dr= ole_document=20 face=3DArial color=3D#000000 size=3D2> <DIV>While not a radar expert, I have found that birds show up quite well= on=20 high frequency marine navigation radars if they are close and the radar is= =20 tweaked. There are high frequency avian radars at many major airports=20 specifically designed to pick up flocks of birds and that is what they may= have=20 used. Weather radars are I believe for the most part Pulse doppler specifi= cally=20 designed to pick up moving precipitation.</DIV> <DIV>Peter Stow</DIV> <DIV>Hubbards</DIV></FONT></BODY></HTML> -------------------------------1253358662--
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