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     Niihau
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External Links

    Jerry Proc's Hyperbolic Radio Navigation Systems Page

   CG RETIREE COUNCIL NW

 

  

Loran-A Stations Geodetic Position

1941 - 1948

Station Location

Coordinates

 Rate M/S On Air Off Air Notes
M Montauk, NY     1L0
1L2		 M
M		 Dec 1941
Sep 1942		 Jul 1943
Jul 1943		 Replaced by Siasconset MA
F Fenwick Island, DE     1L0 S Dec 1941 Feb 1945 Replaced by Bodie Island NC
B Baccaro, Nova Scotia 043 27 33.450 N 065 28 16.330 W 1L1
1L2		 S
S		 Sep 1942
Oct 1942		  
 
D Deming, Nova Scotia 045 12 53.490 N 061 10 32.340 W 1L2
1L7		 M
M		 Oct 1942
Mar 1945		    
V Bonavista, Newfoundland 048 41 45.660 N 053 05 18.240 W 1L3 M Mar 1943    
L Battle Harbor, Labador 052 14 51.300 N 055 36 43.200 W 1L3
1L4		 S
S		 Mar 1943
Mar 1943		    
N Narsak, Greenland 059 58 57.000 N 044 39 51.300 W 1L4 M Mar 1943    
S Siasconset, MA 041 14 59.752 N 069 58 21.732 W 1L0
1L1		 M
M		 Jul 1943
Jul 1943		    
P St Paul, AK 057 09 40.000 N 170 24 41.500 W 1L1
1L2		 M
M		 Sep 1943
Sep 1943		    
M St Matthew, AK 060 21 30.000 N 172 42 56.000 W 1L1 S Sep 1943    
U Umnak Island 052 56 05.500 N 168 57 23.500 W 1L2 S Sep 1943    
U Skuvanes, Faeroes 061 27 22.000 N 006 49 21.000 W 1L5
1L6		 M
M		 Nov 1943
Dec 1943		 Oct 1945  
K Vic, Iceland 064 24 08.000 N 019 02 17.000 W 1L5 S Nov 1943 Oct 1945  
A Mangersta, Hebrides 058 11 11.000 N 007 05 51.000 W 1L6 S Dec 1943 Jan 1945  
C Amchitka Island, AK 051 22 01.340 N 179 12 09.250 W 1L0 M Dec 1943    
T Attu Island, AK 052 45 09.000 N 172 54 31.000 E 1L0 S Dec 1943    
700 Port Errol, Scotland 057 24 40.224 N 001 50 21.959 W 3H4 M Spring 1944   European SS System
23001 Bizerte, North Africa 037 19 57.100 N 009 51 30.100 E 3H4 S Spring 1944   European SS System
23002 Oran, North Africa 035 53 15.800 N 000 19 17.200 W 3H5 M Spring 1944   European SS System
23004 Apollonia, North Africa 032 54 07.540 N 021 59 03.420 E 3H5 S Spring 1944 before 1948 European SS System
  Brindisi, Italy 040 40 48.100 N 017 56 09.000 E 3H5 S Spring 1944   European SS System
Replaced Apollonia, North Africa
  Aguni, Okinawa 026 35 01.000 N 127 12 27.000 E 4H0
4H1		 S
S		      
W Sir Graham Moore Island 013 52 18.000 S 126 30 10.000 E 2H5
2H4		 M
M		 Jul 1944
Jul 1944		    
A Champagny Island 015 16 56.000 S 124 16 25.000 E 2H5 S Jul 1944    
N Bathurst Island 011 45 38.000 S 130 01 43.000 E 2H4 S Jul 1944    
A Hoogrijan, Assam, India 027 22 51.500 N 095 14 41.300 E 4L3
4L4		 M
M		 Sep 1944
Sep 1944		    
C Amguri, Assam, India 026 45 45.000 N 094 36 15.000 E 4L3 S Sep 1944    
B Paya, Assam, India 027 51 46.000 N 095 59 05.200 E 4L4
4L5		 S
S		 Sep 1944
Mar 1945		  
Skywave Synchronized
D Majuro Atoll 007 13 01.340 N 171 04 29.960 E 2L2
2L3		 M
M		 Sep 1944
Sep 1944		    
K Kwajalein Atoll 009 00 52.350 N 167 43 52.420 E 2L2 S Sep 1944    
L Makin Atoll 003 16 19.800 N 172 40 35.900 E 2L3 S Sep 1944    
R Gardner Island 004 41 41.650 S 174 29 50.610 W 2L4
2L5		 M
M		 Sep 1944
Sep 1944		    
E Baker Island 000 11 46.230 N 176 28 26.140 W 2L4 S Sep 1944    
F Atafu Island 008 31 53.600 S 172 31 06.000 W 2L5 S Sep 1944    
W Skaw, Shetlands 060 49 47.000 N 000 46 41.900 W 1L6b S Nov 1944    
S Saipan 015 07 50.170 N 145 41 40.200 E 4H3 M Nov 1944    
V Guam 013 13 42.100 N 144 38 40.500 E 4H3
4H2		 S
S		 Nov 1944
Dec 1944		    
T Pulo Anna 004 39 21.000 N 131 56 42.000 E 4H6
4H7		 M
M		 Dec 1944
Dec 1944		    
U Ngesebus Island, Palau 007 03 51.000 N 134 15 16.000 E 4H6 S Dec 1944    
M Morotai 002 35 05.000 N 128 36 16.000 E 4H7 S Dec 1944    
G Hanchung, Szechwan, China 033 09 02.500 N 107 11 46.400 E 4L0 M Dec 1944   Skywave Synchronized
F Ami, Yunnan, China 023 40 22.400 N 103 14 56.700 E 4L0
4L1		 S
S		 Dec 1944
Dec 1944		   Skywave Synchronized
D Kunyan, Yunnan, China 024 39 34.400 N 102 37 56.700 E 4L1
4L2		 M
M		 Dec 1944
Dec 1944		    
E Lutze, Yunnan, China 025 22 49.500 N 102 17 54.200 E 4L2 S Dec 1944    
H Bodie Island, NC 035 50 07.960 N
035 49 04.697 N		 075 33 32.530 W
075 34 00.128 W		 1L0
1H1		 S
S		 Dec 1944
Mar 1945		  
Coordinates Revised Oct 15, 1945
H Potangeras, Ulithi 010 04 14.500 N 139 40 24.300 E 4H2
4H1		 M
M		 Dec 1944
Apr 1945		  
Skywave Synchronized
C Folly Island, Charleston, SC 032 41 02.787 N 079 53 13.131 W 1H2
1H1		 M
M		 Jan 1945
Mar 1945		    
G Hobe Sound, FL 027 04 41.098 N 080 07 14.574 W 1H2 S Jan 1945    
X Char Chapli Island, Bengal, India 021 47 50.600 N 090 09 08.900 W 4L6
4L5		 M
M		 Feb 1945
Mar 1945		  
Skywave Synchronized
Y Puri, Orissa, India 019 48 12.400 N 085 51 10.600 E 4L6
4L7		 S
S		 Feb 1945
Feb 1945		    
Z Coconada, Madras, India 016 55 06.300 N 082 14 24.000 E 4L7 M Feb 1945    
P Port-aux-Basques, Newfoundland 047 33 53.800 N 059 09 50.690 E 1L7 S Mar 1945    
N Mapia 000 50 29.000 N 134 18 15.000 E 4H0 M Apr 1945   Skywave Synchronized
P Suluan, PI 010 46 13.900 N 125 56 28.400 E 4H0
4H1		 S
S		 Apr 1945
Apr 1945		 before 1948
before 1948		 Skywave Synchronized
Skywave Synchronized
M Matagorda Island, TX 028 20 18.600 N 096 25 22.400 W 2L5
2L6		 M
M		 May 1945
May 1945		   AAC Training Chain
AAC Training Chain
R Cameron, LA 029 45 52.900 N 093 22 19.000 W 2L5 S May 1945   AAC Training Chain
T Port Isabel, TX 026 04 48.000 N 097 09 55.800 W 2L6 S May 1945   AAC Training Chain
K Iwo Jima 024 48 26.100 N 141 17 30.000 E 4H4
4H5		 M
M		 May 1945    
J Okinawa 026 23 49.400 N 128 00 04.500 E 4H4 S May 1945    
  O Shima, Japan 034 40 36.000 N 139 26 33.000 E 4H5 S      
S Point Sur, CA 036 19 01.000 N 121 53 34.000 W 1H6
1H7		 M
M		 Jul 1945
Jul 1945		   AAC
AAC
A Point Arena, Ca 038 55 08.000 N 123 43 23.000 W 1H6 S Jul 1945   AAC
G Point Arguello, CA 034 34 59.500 N 120 38 37.000 W 1H7 S Jul 1945   AAC
  Point Granville, WA     2H4
2H5		 M
M		 Jul 1945
Jul 1945		    
  Cape Blanco, OR     2H4 S Jul 1945    
  Spring Island, Vancouver Island     2H5 S Jul 1945    
P George Field, IL 038 46 59.700N 087 39 08.900 W 2H6
2H7		 M
M		 Jul 1945
Jul 1945		   AAC Training Chain
AAC Training Chain
D Danville, IL 040 06 13.300 N 087 32 26.400 W 2H6 S Jul 1945   AAC Training Chain
S Sturgis, KY 037 32 54.000 N 087 57 58.100 W 2H7 S Jul 1945   AAC Training Chain
B Talampulon 012 07 54.690 N 119 50 31.420 E 1L6
1L7		 S
S		 Jul 1945
Jul 1945		    
L Nawlo Point, Luzon 015 42 22.010 N 119 53 45.350 E 1L6 M Jul 1945    
R Palawan, Tarumpitao 009 02 57.500 N 117 37 44.300 E 1L7 M Jul 1945    
Q Niihau Island 021 48 16.400 N 160 14 13.500 W 2L0
2L1		 M
M		 Jul 1945
Jul 1945		    
J Hawaii Island 020 15 16.500 N 155 53 23.300 W 2L0 S Jul 1945    
G French Frigate Shoals 023 47 04.700 N 166 12 39.500 W 2L1 S Jul 1945    

Interpreting the Loran Rate: 

First Character is the Frequency

1 - 1950 kHz
2 - 1850 kHz
3 - 1900 kHz
4 - 1750 kHz

 

 Second Character is the Basic Pulse Rate

Low - 25 pps
High - 33.3 pps

 

 Last Character is the Specific Pulse Rate

0 - the Basic Rate
1 - Basic Rate minus 100 microseconds
2 - Basic Rate minus 200 microseconds
3 - Basic Rate minus 300 microseconds
4 - Basic Rate minus 400 microseconds
5 - Basic Rate minus 500 microseconds 
6 - Basic Rate minus 600 microseconds 
7 - Basic Rate minus 700 microseconds

 
Example:  French Frigate Shoals is Rate 2L1.  That means they are operating on 1850 kHz and a Pulse Repetition Interval of 39,900 microseconds or 25.0626 pps

Reference:

MIT Radiation Laboratory, Volume 4, Loran

Note:  I suspect the Geodetic Positions are based on NAD 27 datum or whatever the World datum was prior to WWII.

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