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"date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": "SEPCHOKE_MC" }, { "attribute": { "name": "serial_number" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": "5467" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": "BAM" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": "RG214" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": 29.5, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "Cable was calibrated by ORB: delay=149.2 ns\r\nSurge protection device, dly: L2 553, L1 525 ps\r\nTotal delay cable + SPD + adapter: 149.8 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": "NONE" }, { "attribute": { "name": "serial_number" }, "date_from": "2017-08-09 20:00:00", "date_to": "2017-08-10 20:00:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "Cable was calibrated by ORB: delay=149.2 ns\r\nSurge protection device, dly: L2 553, L1 525 ps\r\nTotal delay cable + SPD + adapter: 149.8 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "SEPCHOKE_MC" }, { "attribute": { "name": "serial_number" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "5467" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "BAM" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "RG214" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": 29.5, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "Cable was calibrated by ORB: delay=149.2 ns\r\nSurge protection device, dly: L2 553, L1 525 ps\r\nTotal delay cable + SPD + adapter: 149.8 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "SPKE" }, { "attribute": { "name": "serial_number" }, "date_from": "2017-08-10 20:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": "The 5MHz output of the CH1-75A (maser3) passes\r\nan amplifier HP5087A and then is used as input\r\nto a SpectraTime picoStepper. The output of\r\nthis phase stepper (equal to UTC(ORB)) is used\r\nas an input to the receiver.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2015-12-11 00:00:00", "date_to": "2016-11-07 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2015-12-11 00:00:00", "date_to": "2016-11-07 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CH1-75A MASER" }, { "attribute": { "name": "input_frequency" }, "date_from": "2015-12-11 00:00:00", "date_to": "2016-11-07 00:00:00", "value_date": null, "value_numeric": 10, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "The 5MHz output of the CESIUM 5071A (ces3)\r\npasses an amplifier HP5087A and then is used as\r\ninput to a SpectraTime femtoStepper. The output\r\nof this phase stepper (equal to UTC(ORB)) is\r\nused as an input to the receiver.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2016-11-07 00:00:00", "date_to": "2016-11-17 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2016-11-07 00:00:00", "date_to": "2016-11-17 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL 5071A CESIUM" }, { "attribute": { "name": "input_frequency" }, "date_from": "2016-11-07 00:00:00", "date_to": "2016-11-17 00:00:00", "value_date": null, "value_numeric": 10, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "The 5MHz output of the CH1-75A (maser3) passes\r\nan amplifier HP5087A and then is used as input\r\nto a SpectraTime femtoStepper. The output of\r\nthis phase stepper (equal to UTC(ORB)) is used\r\nas an input to the receiver.\r\nREFDLY = 153.8 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2016-11-17 00:00:00", "date_to": "2017-03-24 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2016-11-17 00:00:00", "date_to": "2017-03-24 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CH1-75A MASER" }, { "attribute": { "name": "input_frequency" }, "date_from": "2016-11-17 00:00:00", "date_to": "2017-03-24 00:00:00", "value_date": null, "value_numeric": 10, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "The 5MHz output of the CH1-75A (maser3) passes\r\nan amplifier HP5087A and then is used as input\r\nto a SpectraTime femtoStepper. The output of\r\nthis phase stepper (equal to UTC(ORB)) is used\r\nas an input to the receiver.\r\nREFDLY = 157.9 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2017-03-24 00:00:00", "date_to": "2022-10-10 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2017-03-24 00:00:00", "date_to": "2022-10-10 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CH1-75A MASER" }, { "attribute": { "name": "input_frequency" }, "date_from": "2017-03-24 00:00:00", "date_to": "2022-10-10 00:00:00", "value_date": null, "value_numeric": 10, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "The 10MHz output of the IMASER 3000 (maser4) is\r\nused as input to a SpectraTime femtoStepper. The\r\noutput of this phase stepper (equal to UTC(ORB))\r\nis used as an input to the receiver.\r\nREFDLY: 157.8 ns", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Avenue Circulaire 3\n1180 Uccle\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "http:\/\/gnss.be\/" }, "comment": "", "email": "time_lab@oma.be", "name": "gnss_time", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2022-10-10 00:00:00", "date_to": null, "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2022-10-10 00:00:00", "date_to": null, "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL IMASER 3000" }, { "attribute": { "name": "input_frequency" }, "date_from": "2022-10-10 00:00:00", "date_to": null, "value_date": null, "value_numeric": 10, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } } ], "station_networks": [], "station_type": "GNSS Continuous" }