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LORAN STATION SPRING ISLAND

Station Information

Site Survey: 1945
 
Construction Date: JUN 1945 - Mobile Unit "G"
1947 - Permanent station construction
 
Constructed by: JUN 1945 - Mobile Unit "G"
 
Established:
Commissioned:
JUN 1945

Disestablished: 14 NOV 1947
 
Operated by:

USCG 1945 - 141600Z NOV 1947
CANADA - 141600Z NOV 1947 - 1977
Project code name:


 
Unit Identifier:


CG Unit 402
Mail address:
 
AKA:


 
HAM Call sign:

N/A
Personnel Allowance:

Station Mascot:

Miscellaneous: 05 MAY 1947 - Station real property transferred to GOC

141600Z NOV 1947 -Station operations and maintenance turnover to GOC

30 OCT 1977 - Fire in engine room - destroyed the power plant - station operations suspended - Loran A service terminated

Commanding Officers/Officer in Charge: 1945 - 1945 LT Bobby D. Pomeroy
1945 - 1946 ENS Frank L. Copps
1946 - 1946 RELE F. G. Bennett (? - 31 JUL)
1946 - 1946 ETM1/c Patrick A. Kane (31 JUL - 26 AUG 1946)
1946 - 1947 CETM Carl W. Jackson (26 AUG - 20 JAN 1947)
1947 - 1947 LTJG Ward R. Turner (20 JAN - 14 NOV 1947) Decomm.

CANADA:
1966: Jim Marvin (Manager)

Station Operations

LORAN-A

49 59 49.35 N - 127 25 13.83 W (1960 Mercury Datum)

Chain: CANADIAN WEST COAST
U.S. WEST COAST
 
Station Letter designation: 1L1/1L4 "V"
 
Radio Call Sign:
 
Declared Operational date: 30 OCT 1945

Operations Ceased: 141600Z NOV 1947 - USCG
30 OCT 1977 - GOC
 
Station Operation: 1945 - 1970: Single SLAVE/SECONDARY (SS)
1970 - 1977: Double SECONDARY (DS)
 
Station pair:
Loran rate:
Coding delay:
Baseline:

Station pair:
Loran rate:
Coding delay:
Baseline:

SPRING ISLAND (S) - POINT GRENVILLE (M)
2H5; 1L1
1000us
Approx. 268.5 Nautical miles

SPRING ISLAND (S) - GRAY'S POINT (M)
1L4
1000us
Approx. 448 Nautical miles
On-air testing date:
 
On-Air: 2H5: 30 OCT 1945
1L1: 1970
1L4: 1971
 
Off-Air: 2H5: 1970 Rate change
1L1: 30 OCT 1977 Power plant fire - Service terminated
1L4: 30 OCT 1977 Power plant fire - Service terminated

 
Monitor Rate: Cross rate monitor
 
Equipment: 1945 - Model C timers/TDP transmitters
1947 - UE-1 timers/TDP-1 transmitters
1966 - T-137A transmitters/T-138 amplifiers installed
DEC 1971 - UE-1 timers paired with Point Grenville
DEC 1971 - AN/FPN-30 timers paired with Gray's Point
 
Antenna: 1947 - 120ft vertical radiator
 

Documents:

05 MAY 1947 - State Department confirmed Real Property transferred to GOC - pdf

09 JUN 1947 - COMDT to D13 concerning the transferred of SPRING ISLAND station - pdf

14 NOV 1947 - Station operations and maintenance turnover to GOC - pdf

Photos:

Maynard Atkinson photos c./1971-72

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Thanks Maynard!

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