Loran Station Johnson Island

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Monitor Stations
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Other Entities
    Construction Comand Unit 203
    Construction Det "A"
    Guam Advance Base
    Subic Bay
    Wildwood
    USCGC Kukui

External Links
Coast Guard Historian Loran Units

Jerry Proc's Hyperbolic Radio Navigation Systems Page

Dennis McCord's Estaca de Vares website

LORAN STATION JOHNSTON ISLAND
LORAN A: 16 44 42.74 N 169 30 46.29 W (1960 Mercury Datum)
LORAN C: 16 44 43.950 N 169 30 31.200 W

Pictures:

Fact Sheet:

Site Survey:	9 OCT – 6 NOV 1959
Construction Date	APR 1957 – NOV 1957 – Johnston Island
Constructed by:
Established:	LORAN A: 1 NOV 1957 – Station commissioned – Johnston Island
Disestablished:	LORAN A: JUL 1979 LORAN C: JAN 1993
Operated by:	USCG
Chain:	LORAN A: HAWAIIAN LORAN C: SH-4, HAWAIIAN S-1, 4990 CENTRAL PACIFIC
Station Letter designation:	LORAN A: “O” LORAN C: MASTER
Station code name:	LORAN A – ELMO 14 LORAN C - DOOR V
Station Unit & or Accounting Number:	14-350535 14-40156
Station nickname:
On-air testing date:	LORAN A: JAN 1958
Operational date:	LORAN A: 08 JAN 1958 LORAN C: 011000Z JUL 1961
Operations Ceased:	LORAN A: 30 JUN 1979 LORAN C: 31 DEC 1992
Station Operation:	LORAN A: Single SLAVE/SECONDARY LORAN C: MASTER
Station pair:	LORAN A: FRENCH FRIGATE SHOALS LORAN C: KURE, UPOLO POINT
Loran Rate:	LORAN A: 2S7 LORAN C: SH-4, S-1, 4990
On-Air:	LORAN A: 2S7, 8 JAN 1958 LORAN C: SH-4, 011000Z JUL 1961 S-1, 1969 4990, 25 FEB 1975
Off-Air	LORAN A: 2S7, 302400Z JUN 1979 LORAN C: SH-4, 1969 S-1, 25 FEB 1975 4990, 312400Z DEC 1992
Monitor Rate:	2S6, FRENCH FRIGATE SHOALS & KAUAI
Equipment:	LORAN A: LORAN C: 1961: AN/FPN-41/42, 625 XMTR ANT, 275KW
Antenna Type:	LORAN A: 180 ft Transmission Tower LORAN C: 625ft, Stainless Inc, Model 1300, 1961
Personnel Allowance:
Miscellaneous:	LORAN A: NOV 1954 – A site survey was on LAYSAN for LORAN A which was constructed on JOHNSTON ISLAND. APR – NOV 1957 Code name for shipments “GIFTS” 1 NOV 1957 Loran A Station commissioned however delay on air due to tube storage located on Johnston Island. LORAN C: 06 SEP 1960 Site Survey declassified Other sites considered LISIANSKI, FRENCH FRIATE SHOALS or LAYSAN under the code name DOOR V. 1 JUL 1961 – A/C station located on Sand Island. 1962 - FISHBOWL - showed that Nuclear explosions affected the "D" layer some 5000 miles distance 1971-72 Xfer gas from Okinawa
Commanding Officers / Officers in Charge	LORAN A: - Johnston Island 1^st CO: LTJG M. Y. Suzich ? – 28 MAR 1958 2^nd CO: LTJG/LT J F Culbertson 28 MAR 1958 – 18 MAR 1959 3^rd CO: LTJG/LT William G Hicks 18 MAR 1959 – 26 MAR1960 4^th CO: LTJG W E Morris 26 MAR 1960 – 28 MAR 1961 5^th CO: LTJG E B Acklin 28 MAR 1961 – 28 MAR 1962 LORAN A/C – Sand Island 6^th CO: LTJG Paul Welling 28 MAR 1962 – 31 MAR 1963 7^th CO: LTJG Bill Hayes 31 MAR 1963 – 6 APR 1964 8^th CO: LTJG Peter N Thurman 6 APR 1964 - 1965 CO: LTJG John Miner 1971 - 1972 LORAN C: CO: CWO Mark Ray Coleman 1981 - 1982 CO: LT Gary Schenk 1983 - 1984 CO: CWO Charles Knight 1987 - 1988 Last CO: CWO Terrance J Brennan 1992 - 1993 CO: CWO Tom Hoskins