Geodesy & Positioning (geodeticenquiries@os.uk) 2026-01-14 UPDATE Weybourne WEYB 0 0 19178M001 1.0 Concrete Sectional Building Centre of mount thread on plane of antenna ARP 2004-08-13 Weybourne Norfolk 0038991 5.0 0.0 2004-08-13T00:00:00Z Exact time of receiver swap unknown 0038989 5.0 0.0 2007-02-13T12:01:00Z 356365 5.0 0.0 2009-03-11T12:00:00Z 356365 5.0 0.0 2010-05-17T22:33:00Z ME firmware v4.005 356009 0.0 0.0 2011-06-22T09:38:00Z ME firmware v4.005 356009 0.0 0.0 2011-11-11T14:00:00Z ME firmware v6.112 356009 0.0 0.0 2015-06-11T10:42:00Z 5804R40018 0.0 0.0 2018-07-18T09:35:00Z 5804R40018 0.0 0.0 2018-10-23T08:55:00Z 5804R40018 0.0 0.0 2019-10-03T10:35:00Z 5804R40018 0.0 0.0 2020-03-03T09:55:00Z 5804R40018 0.0 0.0 2021-11-09T16:37:00Z 5804R40018 0.0 0.0 2022-06-17T15:36:00Z 5804R40018 0.0 0.0 2023-04-17T16:26:00Z 5804R40018 0.0 0.0 2023-09-08T13:37:00Z 5804R40018 0.0 0.0 2024-02-19T14:57:00Z 5804R40018 0.0 0.0 2025-05-13T14:45:00Z 5804R40018 0.0 0.0 2026-01-14T10:33:00Z 5804R40018 0.0 0.0 2026-01-14T10:33:00Z 102069 0.0 0.0 0.0 0.0 2004-08-13T00:00:00Z 08470027 0.0 0.0 0.0 0.0 2009-03-11T12:00:00Z 2009-03-11 ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier ------------------------------------------------------------------------------ LEIAT504 L1/L2 Dorne Margolin antenna with chokerings (designed after DORNE MARGOLIN T) +-------+ <-- 0.1393 / + \ <-- 0.1282 L2 | + | <-- 0.1093 L1 +-----------------+-------------+------------------+ <-- 0.1020 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.0380 +-------------------+-------------+--------------------+ <-- 0.1020 BCR | | | | +------x------+ <-- 0.000 BPA=ARP <-- 0.3794 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier]]> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier ------------------------------------------------------------------------------ LEIAT504 L1/L2 Dorne Margolin antenna with chokerings (designed after DORNE MARGOLIN T) +-------+ <-- 0.1393 / + \ <-- 0.1282 L2 | + | <-- 0.1093 L1 +-----------------+-------------+------------------+ <-- 0.1020 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.0380 +-------------------+-------------+--------------------+ <-- 0.1020 BCR | | | | +------x------+ <-- 0.000 BPA=ARP <-- 0.3794 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier]]>