{ "cdp_num": null, "comment": "Station located at old astrolab observ. dome.\r\nOn 2012-02-14, BRUS has been decommissioned\r\nbecause the antenna monument was destroyed due\r\nthe need to remove asbestos in the building\r\naround the antenna. 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Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": null, "value_varchar": "AOAD\/M_T" }, { "attribute": { "name": "serial_number" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": null, "value_varchar": "182" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": 3.9702, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": null, "value_varchar": "RG-223" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "1993-10-20 00:00:00", "date_to": "2000-04-27 12:10:00", "value_date": null, "value_numeric": 30, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. 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Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "item_attributes": [ { "attribute": { "name": "antenna_type" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": "ASH701945B_M" }, { "attribute": { "name": "serial_number" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": "CR519994604" }, { "attribute": { "name": "antenna_reference_point" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": "BPA" }, { "attribute": { "name": "marker_arp_up_ecc" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": 3.9702, "value_varchar": null }, { "attribute": { "name": "marker_arp_north_ecc" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "marker_arp_east_ecc" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "alignment_from_true_n" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": 0, "value_varchar": null }, { "attribute": { "name": "antenna_cable_type" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": "ANDREW heliax LDF2-50A" }, { "attribute": { "name": "antenna_cable_length" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": 85, "value_varchar": null } ], "item_type": { "name": "antenna" } } }, { "item": { "comment": "Site dismantled due to the removal of asbestos\r\nin\r\nthe building around the antenna pillar.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "item_attributes": [ { "attribute": { "name": "radome_type" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": "NONE" }, { "attribute": { "name": "serial_number" }, "date_from": "2000-04-27 12:15:00", "date_to": "2012-02-14 07:35:00", "value_date": null, "value_numeric": null, "value_varchar": null } ], "item_type": { "name": "radome" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "1994-04-27 00:00:00", "date_to": "1994-08-23 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "1994-04-27 00:00:00", "date_to": "1994-08-23 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CESIUM" }, { "attribute": { "name": "input_frequency" }, "date_from": "1994-04-27 00:00:00", "date_to": "1994-08-23 00:00:00", "value_date": null, "value_numeric": 5, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "1994-08-23 00:00:00", "date_to": "2001-03-19 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "1994-08-23 00:00:00", "date_to": "2001-03-19 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL H-MASER" }, { "attribute": { "name": "input_frequency" }, "date_from": "1994-08-23 00:00:00", "date_to": "2001-03-19 00:00:00", "value_date": null, "value_numeric": 5, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2001-03-20 00:00:00", "date_to": "2003-07-03 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2001-03-20 00:00:00", "date_to": "2003-07-03 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL H-MASER" }, { "attribute": { "name": "input_frequency" }, "date_from": "2001-03-20 00:00:00", "date_to": "2003-07-03 00:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "step of 6.15 ns in the antenna cable\r\nbetween 2003-07-03 and 2003-07-10", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2003-07-03 00:00:00", "date_to": "2003-08-01 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2003-07-03 00:00:00", "date_to": "2003-08-01 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CESIUM" }, { "attribute": { "name": "input_frequency" }, "date_from": "2003-07-03 00:00:00", "date_to": "2003-08-01 00:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "CH1-75 active H-maser.\r\nIt is the source of UTC(ORB).\r\nUTC(ORB)-BRUS_1PPS (cable delay +\r\ndelay from 1PPS_in to internal reference)\r\n= 48.6 ns\r\n10MHz from distr. amp. HP5087A,\r\nthen frequency doubler up to 20MHz.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2003-08-01 00:00:00", "date_to": "2010-03-31 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2003-08-01 00:00:00", "date_to": "2010-03-31 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL H-MASER CH1-75" }, { "attribute": { "name": "input_frequency" }, "date_from": "2003-08-01 00:00:00", "date_to": "2010-03-31 00:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "CH1-75A active H-maser.\r\nIt is the source of UTC(ORB).\r\nUTC(ORB)-BRUS_1PPS (cable delay + delay from\r\n1PPS_in to internal reference)\r\n= 47.6 ns\r\n10MHz from distr. amp. HP5087A,\r\nthen frequency doubler up to 20MHz.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2010-03-31 00:00:00", "date_to": "2010-11-05 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2010-03-31 00:00:00", "date_to": "2010-11-05 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL H-MASER CH1-75A" }, { "attribute": { "name": "input_frequency" }, "date_from": "2010-03-31 00:00:00", "date_to": "2010-11-05 00:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": null, "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "metadata_custodian", "title": "" }, "date_from": "2010-11-05 00:00:00", "date_to": "2011-12-19 00:00:00", "item_attributes": [ { "attribute": { "name": "standard_type" }, "date_from": "2010-11-05 00:00:00", "date_to": "2011-12-19 00:00:00", "value_date": null, "value_numeric": null, "value_varchar": "EXTERNAL CESIUM" }, { "attribute": { "name": "input_frequency" }, "date_from": "2010-11-05 00:00:00", "date_to": "2011-12-19 00:00:00", "value_date": null, "value_numeric": 20, "value_varchar": null } ], "item_type": { "name": "frequency_standard" } } }, { "item": { "comment": "The 5MHz output of the CH1-75A (maser3) passes a\r\nMinicircuits FD-2+ frequency doubler and then 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.", "contact_as_owner": { "agency": { "abbreviation": "ROB", "address": "Av. Circulaire 3\n1180 Brussels\nBelgium", "infos": "", "name": "Royal Observatory of Belgium", "www": "" }, "comment": "", "email": "gnss@oma.be", "name": "GNSSatROB", "phone": "", "role": "site_owner", "title": "" }, "contact_as_producer": { "agency": { "abbreviation": "ROB", "address": "Av. 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