Message-ID: <01BFD5FC.FBB3C240@atlas.taf.npl.co.uk> From: Jon Clarke To: IGLOS_Mail Subject: [IGLOSMAIL-14] NPLC new TSA antenna Date: Wed, 14 Jun 2000 12:35:10 +0100 Sender: owner-iglosmail Precedence: bulk ****************************************************************************** IGLOS Electronic Mail 14 Jun 09:23:21 PDT 2000 Message Number 14 ****************************************************************************** Author: Jon Clarke Dear Colleagues,=20 yesterday (MJD 51708) I exchanged our R100-40T TECOM 3S W/O CR antenna = for a TSA-100 3S CR temperature-stabilised antenna. This follows the = antenna's GPS phase centre characterisation, which was kindly completed = by Gerry Mader and colleagues of the US National Geodetic Survey.=20 The new antenna is also on a different mount (due to it weighing about = 20kg more than the old one!), so I will shortly make available the = position offset.=20 I will update the Rinex header and submit an IGLOS site log as soon as = possible (hopefully within 24 hours).=20 To users of our CGGTTS BIPM common view data - I will soon update the = TTSetup.exe parameters to remove the time step introduced by the new = antenna, but I require a day or so's data first.=20 Regards, Jon=20 ------------------------------------------------------------------------ Mr Jon Clarke Time and Frequency Section, jon.clarke@npl.co.uk Centre for Electromagnetic and Time Metrology, tel: +44 (0) 20 8943 6548 National Physical Laboratory, fax: +44 (0) 20 8943 6529 Queens Road, Teddington, TW11 0LW, U.K.