Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.4.5) with ESMTP id 781489 for rob@logan.com; Thu, 17 May 2001 15:22:41 -0400 Received: from snipe.mail.pas.earthlink.net ([207.217.120.62]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71175U5500L550S0V35) with ESMTP id com for ; Thu, 17 May 2001 15:15:22 -0400 Received: from walter (pool0433.cvx38-bradley.dialup.earthlink.net [216.244.31.178]) by snipe.mail.pas.earthlink.net (EL-8_9_3_3/8.9.3) with SMTP id MAA18794 for ; Thu, 17 May 2001 12:22:24 -0700 (PDT) Message-ID: <000201c0df07$31cf2cc0$b21ff4d8@walter> From: "Walter Dodson" To: "LancairList" Subject: WAAS Technically OK Date: Wed, 16 May 2001 23:33:29 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Apr 16 Aviation Week and Space Technology has a great article on WAAS (pg. 48). "About two dozen ground reference stations measure GPS and ionospheric errors, which are transmitted to geostationary satellites, and then relayed to users." "One obvious shortcoming of the current system is its reliance on only two geostationary satellites for transmitting integrity and correction messages. A single failure would cut off services to about half of the continental U.S." Too much more... find the article. Walter Dodson >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>