Geodesy & Positioning (geodeticenquiries@os.uk) 2026-01-14 UPDATE Wellingborough WELL 0 0 0.8 Gable end of brick building Centre of mount thread on plane of antenna ARP 2006-10-05 Wellingborough Northamptonshire 0034830 5.0 0.0 2006-10-05T00:00:00Z 356015 5.0 0.0 2009-01-08T13:00:00Z 356209 5.0 0.0 2010-01-15T10:00:00Z 356209 5.0 0.0 2010-05-17T00:45:00Z 356437 0.0 0.0 2010-11-23T11:20:00Z ME firmware v6.112 356437 0.0 0.0 2015-06-11T10:16:00Z 5803R40150 0.0 0.0 2018-07-09T09:45:00Z 5803R40150 0.0 0.0 2018-10-24T12:05:00Z 5803R40150 0.0 0.0 2019-10-03T10:10:00Z 5803R40150 0.0 0.0 2020-03-03T09:35:00Z 5803R40150 0.0 0.0 2021-11-09T15:03:00Z 5803R40150 0.0 0.0 2022-06-17T15:36:00Z 5803R40150 0.0 0.0 2023-04-17T16:25:00Z 5803R40150 0.0 0.0 2023-09-08T13:37:00Z 5803R40150 0.0 0.0 2024-02-19T14:57:00Z 5803R40150 0.0 0.0 2025-05-13T14:44:00Z 5803R40150 0.0 0.0 2026-01-14T10:33:00Z 5803R40150 0.0 0.0 2026-01-14T10:33:00Z 806 0.0 0.0 0.0 0.0 20.0 2006-10-05T00:00:00Z 08450001 0.0 0.0 0.0 0.0 21.0 2009-01-08T13:00:00Z 21204032 0.05 0.0 0.0 0.0 21.0 2018-09-07T09:40:00Z 2006-10-05 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 LEIAR10 . ^ . <-- 0.1362 . . . . . . . . / \ | | | | <-- 0.0362 Notch +-----____ ____-----+ -----____ ____-\ \- +--x--+ \_\ <-- 0.0000 BAM=ARP NOM=NRP <-- 0.2400 --> BAM: Bottom of Antenna Mount]]> 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 LEIAR10 . ^ . <-- 0.1362 . . . . . . . . / \ | | | | <-- 0.0362 Notch +-----____ ____-----+ -----____ ____-\ \- +--x--+ \_\ <-- 0.0000 BAM=ARP NOM=NRP <-- 0.2400 --> BAM: Bottom of Antenna Mount]]>