Not applicable 00 0 Reserved Operational Before 01 1 iMet-1-BB (United States) Operational Not applicable 02 2 No radiosonde - passive target (e.g. reflector) Operational Not applicable 03 3 No radiosonde - active target (e.g. transponder) Operational Not applicable 04 4 No radiosonde - passive temperature-humidity profiler Operational Not applicable 05 5 No radiosonde - active temperature-humidity profiler Operational Not applicable 06 6 No radiosonde - radio-acoustic sounder Operational Before 07 7 iMet-1-AB (United States) Operational Not applicable 08 8 No radiosonde -... (reserved) Operational Not applicable 09 9 No radiosonde - system unknown or not specified Operational Before 10 10 VIZ type A pressure-commutated (United States) Operational Before 11 11 VIZ type B time-commutated (United States) Operational Before 12 12 RS SDC (Space Data Corporation - United States) Operational Before 13 13 Astor (no longer made - Australia) Operational Before 14 14 VIZ MARK I MICROSONDE (United States) Operational Before 15 15 EEC Company type 23 (United States) Operational Before 16 16 Elin (Austria) Operational Before 17 17 Graw G. (Germany) Operational Before 18 18 Graw DFM-06 (Germany) Operational Before 19 19 Graw M60 (Germany) Operational Before 20 20 Indian Meteorological Service MK3 (India) Operational Before 21 21 VIZ/Jin Yang MARK I MICROSONDE (Republic of Korea) Operational Before 22 22 Meisei RS2-80 (Japan) Operational Before 23 23 Mesural FMO 1950A (France) Operational Before 24 24 Mesural FMO 1945A (France) Operational Before 25 25 Mesural MH73A (France) Operational Before 26 26 Meteolabor Basora (Switzerland) Operational Before 27 27 AVK-MRZ (Russian Federation) Operational Before 28 28 Meteorit MARZ2-1 (Russian Federation) Operational Before 29 29 Meteorit MARZ2-2 (Russian Federation) Operational Before 30 30 Oki RS2-80 (Japan) Operational Before 31 31 VIZ/Valcom type A pressure-commutated (Canada) Operational Before 32 32 Shanghai Radio (China) Operational Before 33 33 UK Met Office MK3 (UK) Operational Before 34 34 Vinohrady (Czechia) Operational Before 35 35 Vaisala RS18 (Finland) Operational Before 36 36 Vaisala RS21 (Finland) Operational Before 37 37 Vaisala RS80 (Finland) Operational Before 38 38 VIZ LOCATE Loran-C (United States) Operational Before 39 39 Sprenger E076 (Germany) Operational Before 40 40 Sprenger E084 (Germany) Operational Before 41 41 Sprenger E085 (Germany) Operational Before 42 42 Sprenger E086 (Germany) Operational Before 43 43 AIR IS - 4A - 1680 (United States) Operational Before 44 44 AIR IS - 4A - 1680 X (United States) Operational Before 45 45 RS MSS (United States) Operational Before 46 46 AIR IS - 4A - 403 (United States) Operational Before 47 47 Meisei RS2-91 (Japan) Operational Before 48 48 VALCOM (Canada) Operational Before 49 49 VIZ MARK II (United States) Operational Before 50 50 Graw DFM-90 (Germany) Operational Before 51 51 VIZ-B2 (United States) Operational Before 52 52 Vaisala RS80-57H Operational Before 53 53 AVK-RF95 (Russian Federation) Operational Before 54 54 Graw DFM-97 (Germany) Operational Before 55 55 Meisei RS-01G (Japan) Operational Before 56 56 M2K2 (France) Operational Before 57 57 Modem M2K2-DC (France) Operational Before 58 58 AVK-BAR (Russian Federation) Operational Before 59 59 Modem M2K2-R 1680 MHz RDF radiosonde with pressure sensor chip (France) Operational Before 60 60 Vaisala RS80/MicroCora (Finland) Operational Before 61 61 Vaisala RS80/Loran/Digicora I, II or Marwin (Finland) Operational Before 62 62 Vaisala RS80/PCCora (Finland) Operational Before 63 63 Vaisala RS80/Star (Finland) Operational Before 64 64 Orbital Sciences Corporation, Space Data Division, transponder radiosonde, type 909-11-XX, where XX corresponds to the model of the instrument (United States) Operational Before 65 65 VIZ transponder radiosonde, model number 1499-520 (United States) Operational Before 66 66 Vaisala RS80 /Autosonde (Finland) Operational Before 67 67 Vaisala RS80/Digicora III (Finland) Operational Before 68 68 AVK-RZM-2 (Russian Federation) Operational Before 69 69 MARL-A or Vektor-M-RZM-2 (Russian Federation) Operational Before 70 70 Vaisala RS92/Star (Finland) Operational Before 71 71 Vaisala RS90/Loran/Digicora I, II or Marwin (Finland) Operational Before 72 72 Vaisala RS90/PC-Cora (Finland) Operational Before 73 73 Vaisala RS90/Autosonde (Finland) Operational Before 74 74 Vaisala RS90/Star (Finland) Operational Before 75 75 AVK-MRZ-ARMA (Russian Federation) Operational Before 76 76 AVK-RF95-ARMA (Russian Federation) Operational Before 77 77 GEOLINK GPSonde GL98 (France) Operational Before 78 78 Vaisala RS90/Digicora III (Finland) Operational Before 79 79 Vaisala RS92/Digicora I,II or Marwin (Finland) Operational Before 80 80 Vaisala RS92/Digicora III (Finland) Operational Before 81 81 Vaisala RS92/Autosonde (Finland) Operational Before 82 82 Sippican MK2 GPS/STAR (United States) with rod thermistor, carbon element and derived pressure Operational Before 83 83 Sippican MK2 GPS/W9000 (United States) with rod thermistor, carbon element and derived pressure Operational Before 84 84 Sippican MARK II with chip thermistor, carbon element and derived pressure from GPS height Operational Before 85 85 Sippican MARK IIA with chip thermistor, carbon element and derived pressure from GPS height Operational Before 86 86 Sippican MARK II with chip thermistor, pressure and carbon element Operational Before 87 87 Sippican MARK IIA with chip thermistor, pressure and carbon element Operational Before 88 88 MARL-A or Vektor-M-MRZ (Russian Federation) Operational Before 89 89 MARL-A or Vektor-M-BAR (Russian Federation) Operational Not applicable 90 90 Radiosonde not specified or unknown Operational Not applicable 91 91 Pressure only radiosonde Operational Not applicable 92 92 Pressure only radiosonde plus transponder Operational Not applicable 93 93 Pressure only radiosonde plus radar reflector Operational Not applicable 94 94 No pressure radiosonde plus transponder Operational Not applicable 95 95 No pressure radiosonde plus radar reflector Operational Not applicable 96 96 Descending radiosonde Operational Before 97 97 iMet-2/iMet-1500 RDF radiosonde with pressure sensor chip (South Africa) Operational Before 98 98 iMet-2/iMet-1500 GPS radiosonde with derived pressure from GPS height (South Africa) Operational Before 99 99 iMet-2/iMet-3200 GPS radiosonde with derived pressure from GPS height (South Africa) Operational Not available 100 Reserved for BUFR only Operational 01 101 Not vacant Operational Not available 102-106 Reserved for BUFR only Operational 07 107 Not vacant Operational Not available 108-109 Reserved for BUFR only Operational 01/01/2008 10 110 Sippican LMS5 w/Chip Thermistor, duct mounted capacitance relative humidity sensor and derived pressure from GPS height Operational 01/01/2008 11 111 Sippican LMS6 w/Chip Thermistor, external boom mounted capacitance relative humidity sensor, and derived pressure from GPS height Operational 06/05/2015 12 112 Jin Yang RSG-20A with derived pressure from GPS height/GL-5000P (Republic of Korea) Operational 15/09/2010 13 113 Vaisala RS92/MARWIN MW32 (Finland) Operational 03/11/2011 14 114 Vaisala RS92/DigiCORA MW41 (Finland) Operational 01/12/2011 15 115 PAZA-12M/Radiotheodolite-UL (Ukraine) Operational 01/12/2011 16 116 PAZA-22/AVK-1 (Ukraine) Operational 02/05/2012 17 117 Graw DFM-09 (Germany) Operational 18 118 Not vacant Operational 15/05/2019 19 119 Polus-MRZ-N1 (Russian Federation) Operational 20 120 Not vacant Operational 06/05/2015 21 121 Jin Yang 1524LA LORAN-C/GL5000 (Republic of Korea) Operational 02/05/2012 22 122 Meisei RS-11G GPS radiosonde w/thermistor, capacitance relative humidity sensor, and derived pressure from GPS height (Japan) Operational 03/11/2011 23 123 Vaisala RS41/DigiCORA MW41 (Finland) Operational 03/11/2011 24 124 Vaisala RS41/AUTOSONDE (Finland) Operational 03/11/2011 25 125 Vaisala RS41/MARWIN MW32 (Finland) Operational 07/05/2014 26 126 Meteolabor SRS-C34/Argus 37 (Switzerland) Operational 27 127 Not vacant Operational 15/09/2011 28 128 AVK - AK2-02 (Russian Federation) Operational 15/09/2011 29 129 MARL-A or Vektor-M - AK2-02 (Russian Federation) Operational 01/01/2010 30 130 Meisei RS-06G (Japan) Operational 03/11/2011 31 131 Taiyuan GTS1-1/GFE(L) (China ) Operational 03/11/2011 32 132 Shanghai GTS1/GFE(L) (China) Operational 03/11/2011 33 133 Nanjing GTS1-2/GFE(L) (China) Operational 06/05/2020 34 134 iMet-4 GPS radiosonde (USA) Operational 07/05/2014 35 135 Meisei iMS-100 GPS radiosonde w/thermistor sensor, capacitance relative humidity sensor, and derived pressure from GPS height (Japan) Operational 02/05/2018 36 136 Meisei iMDS-17 GPS dropsonde w/thermistor sensor, capacitance relative humidity sensor, and capacitance pressure sensor (Japan) Operational 37 137 Not vacant Operational Needed 38-40 138-140 Vacant Operational 03/11/2011 41 141 Vaisala RS41 with pressure derived from GPS height/DigiCORA MW41 (Finland) Operational 03/11/2011 42 142 Vaisala RS41 with pressure derived from GPS height/AUTOSONDE (Finland) Operational 07/05/2014 43 143 NanJing Daqiao XGP-3G (China)* Operational 07/05/2014 44 144 TianJin HuaYunTianYi GTS(U)1 (China)* Operational 07/05/2014 45 145 Beijing Changfeng CF-06 (China)* Operational 07/05/2014 46 146 Shanghai Changwang GTS3 (China)* Operational 47 147 Not vacant Operational 02/05/2012 48 148 PAZA-22M/MARL-A Operational 49 149 Not vacant Operational 02/11/2016 50 150 Meteolabor SRS-C50/Argus (Switzerland) Operational 51 151 Not vacant Operational 03/11/2011 52 152 Vaisala RS92-NGP/Intermet IMS-2000 (United States) Operational 06/05/2015 53 153 AVK - I-2012 (Russian Federation) Operational 15/05/2019 54 154 Graw DFM-17 (Germany) Operational 55-59 155-159 Not vacant Operational 06/05/2015 60 160 MARL-A or Vektor-M - I-2012 (Russian Federation) Operational 61 161 Not vacant Operational 06/05/2015 62 162 MARL-A or Vektor-M - MRZ-3MK (Russian Federation) Operational 07/11/2018 63 163 Modem M20 radiosonde w/thermistor sensor, capacitance relative humidity sensor, and derived pressure from GPS height (France) Operational 07/11/2018 64 164 Modem PilotSonde GPS radiosonde (France) Operational 15/05/2022 65 165 Meteosis MTS-01 (Turkey) Operational Needed 66 166 Vacant Operational 67-72 167-172 Not vacant Operational 02/11/2016 73 173 МАRL-A (Russian Federation) - ASPAN-15 (Kazakhstan) Operational 74-76 174-176 Not vacant Operational 15/03/2010 77 177 Modem GPSonde M10 (France) Operational 78-81 178-181 Not vacant Operational 07/11/2012 82 182 Lockheed Martin LMS-6 w/chip thermistor; external boom mounted polymer capacitive relative humidity sensor; capacitive pressure sensor and GPS wind Operational 07/11/2012 83 183 Vaisala RS92-D/Intermet IMS 1500 w/silicon capacitive pressure sensor, capacitive wire temperature sensor, twin thin-film heated polymer capacitive relative humidity sensor and RDF wind Operational 06/11/2019 84 184 iMet-54/iMet-3200/3400 GPS radiosonde with derived pressure from GPS height (South Africa) Operational 85-89 185-189 Not vacant Operational Not available 190 NCAR research dropsonde NRD94 with GPS and Vaisala RS92-based sensor module (United States) Operational Not available 191 NCAR research dropsonde NRD41 with GPS and Vaisala RS41-based sensor module (United States) Operational Not available 192 Vaisala/NCAR dropsonde RD94 with GPS and Vaisala RS92-based sensor module (Finland/United States) Operational Not available 193 Vaisala/NCAR dropsonde RD41 with GPS and Vaisala RS41-based sensor module (Finland/United States) Operational Not available 194-196 Reserved for BUFR only Operational 97-99 197-199 Not vacant Operational 16/11/2020 Not available 200 Nanjing GTS11 (China) Operational 16/11/2020 Not available 201 Shanghai GTS12 (China) Operational 16/11/2020 Not available 202 Taiyuan GTS13 (China) Operational 15/05/2022 Not available 203 Shanghai GTS14 (China) Operational Not available 204-254 Reserved for BUFR only Operational 255 Missing value Operational