Geodesy & Positioning (geodeticenquiries@os.uk) 2026-01-09 UPDATE Lochgilphead LOCG 0 0 19150M001 1.5 stone chimney stack Centre of mount thread on plane of antenna ARP 2005-03-10 Lochgilphead ARGYLL AND BUTE 0038787 5.0 0.0 2005-03-11T00:00:00Z 356469 5.0 0.0 2009-02-05T12:00:00Z ME firmware upgraded to v4.003.S6 356469 5.0 0.0 2009-05-15T13:15:00Z ME firmware v4.004 356469 5.0 0.0 2010-05-16T22:35:00Z ME firmware v4.007 356433 0.0 0.0 2010-11-08T13:30:00Z ME firmware v4.007 356433 0.0 0.0 2011-11-02T11:05:00Z ME firmware v6.112 356433 0.0 0.0 2015-06-18T08:05:00Z 5804R40045 0.0 0.0 2018-09-06T11:00:00Z 5804R40045 0.0 0.0 2018-10-23T15:05:00Z 5804R40045 0.0 0.0 2019-10-01T10:00:00Z 5804R40045 0.0 0.0 2020-02-26T08:30:00Z 5804R40045 0.0 0.0 2020-09-30T11:19:00Z 5804R40045 0.0 0.0 2021-11-08T15:02:00Z 5804R40045 0.0 0.0 2022-06-16T14:19:00Z 5804R40045 0.0 0.0 2023-04-14T14:54:00Z 5804R40045 0.0 0.0 2023-09-04T15:13:00Z 5804R40045 0.0 0.0 2024-02-16T15:38:00Z 5804R40045 0.0 0.0 2025-05-09T15:30:00Z 5804R40045 0.0 0.0 2026-01-09T15:54:00Z 5804R40045 0.0 0.0 2026-01-09T15:54:00Z unknown 0.0 0.0 0.0 30.0 2005-03-11T00:00:00Z 08510027 0.0 0.0 0.0 30.0 2022-04-26T11:48:00Z 20204010 0.05 0.0 0.0 0.0 30.0 2022-04-26T11:48:00Z 2005-01-28 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]]>