Subject: Important Leica firmware update (solving R10/R14 GLONASS tracking problem) Author: Stefan Schaer Dear IGS colleagues, In IGS Mail 5924 http://igscb.jpl.nasa.gov/mail/igsmail/2009/msg00049.html we noted a reduced amount of observation data for R10 and R14 due to receiver firmware issues. See, e.g.: ftp://ftp.unibe.ch/aiub/igsdata/y2009/odata_glonass_d108.txt ftp://ftp.unibe.ch/aiub/igsdata/y2009/odata_glonass_d109.txt ftp://ftp.unibe.ch/aiub/igsdata/y2009/odata_glonass_d110.txt The station operators responsible for Leica (and NovAtel) GNSS receivers are advised to update the firmware to the latest version asap: 7.02/3.017 for LEICA GRX1200GGPRO, 7.02/4.003 for LEICA GRX1200+GNSS, 3.62 for NOV OEMV3. See also: http://www.leica-geosystems.com/corporate/en/downloads/lgs_page_catalog.htm?cid=3324 http://www.novatel.com/support/fwswupdates.htm#oemv List of obviously affected GNSS receivers: AFKB AJAC ALIC BAKO BARH BRST BZRG CASC DARW DAV1 EPRT FLRS FUNC HERT HNPT HOB2 HYDE IDDR ILHA JOZ2 KHAR (NOV OEMV3) KOSG LAMA LPAL MATE MOBS NANO NICO NTUS ORID PDEL PENC RCMN STR1 TOW2 UNBN (NOV OEMV3, already updated) XMIS YAR3 It should be mentioned that the percentage of Leica receivers has reached more than 30% of the GPS/GLONASS tracking receivers considered in CODE's data monitorung (currently 41 of 133). Remark: We still receive incomplete GLONASS observation data from modern GNSS receivers which are not yet ready to track GLONASS negative frequency channels (due to non-updated firmware): PARK (JPS E_GGD) POUS (TPS GB-1000) VESL (TPS GB-1000) Best regards, Stefan