LEGEND 



RELIABLE AVERAGE RANGE 



Class B. 100 Miles- 



Q Class C, 20 Miles. 



Class D. 10 Miles. "ISee Footnote) 



^ ^V - Distance Finding Stations. 

 LS. Ugtltship. 



lH^k^^ AI PASSAGE 10 12-5) 



[ MCMI^ ."/j|"*]<*p^ I HICHIPICOtEN ID lCA«jI. 4l,--^jjj „|c„|p|coTEN HBR. (CAH.) |1.4| W 



^ T ., _ 3 GPS- ^^•"» 30^23? Ty T CDC ^^a in »d 



Crn cAniaou to ican i[i-<) 



^ • ID 296 



S [2] 



United States Coast Guard 



Radiobeacon System 

 Great Lakes 



(Including Canadian Radiobeacons) 



note 



n SUPERIOR ENTRY [2- 5) 

 ^•« 308 



explanation 



FREQUENCY is giwei 

 OPERATING SEQUENCE 



UtvlTED STATES and CANADIAN radiobeacons are assigned group 

 trequencies and delinite operating minutes. Ill 

 a group IS indicaled by a Roman numeral before the 

 H Stations with the same sequence 



CHARACTERISTIC is shown below statu 

 and CANADIAN radiobeacons send sign 

 seconds silent 

 OPERATING SCHEDULE 



/in UNSING SH0AL[2-5 



I 1/ — — •• 296 ^^ VW.A >.^"""_... 



It MINNEAPOLIS SH0ALI3-6L«y jj |;„„s REEF|2-5)T'/V^«1 



^•^*" ""/ Yi —..^296 / , ^POEREtF[HJ 



/ ^"v ^ •■•^302 



in PLUM ISLAND[3-6) VI 



for Ml rnformolion see LIGHT LISTS -- 



UNITED STATES ond CANADA. 



See NOTICE TO MARINERS (or chonges. 



J lOm 



King fog 

 jdsoutol 

 ington. Muskegoi 





operate throughoul the hour with station character 

 superimposed on continuous carrier 



The scheduled 10 minute periods of each hour of cle 

 operation are given in brackets after the name of If 

 thus |1.4| 12-51 etc iSee clock lace diagrami The 1. 

 cl each clear weather 10 minute period is silei^t. 

 DISTANCE FINDING STATIONS. 



At I 



sound signal are synchionized'lor 

 ation and table in LIGHT LIST) 

 DIAL SEniNGS 



WINTER OPERATION: 



it':'>\ 



CHAMBERS ID. 304 — ^ ETC 312 



MENOMINEE 286' 



SHERWOOD PT 



H GREEN BAy[2' 

 ^•^ 314 



m STURGEON BAY CANAL IT-Al 



I KEWAUNEEI2 



U VIANITOWOC 

 I Continuous 



SHEBOYGAN 294 



m MILWAUKEE [l'4l 



ST MARTIN ID 13-61 I OLD MACKINAC F 



Wheie navigation continues during all or part ol the normally 

 closed winter season certain radiobeacons may be continued in 

 operation, regarding which consult the Commander, 9th Coast 

 Guard District, Cleveland, Ohio. 

 •MARKER ftADIOBEACON; 



Radiobeacons marked Q 

 They op 



eolh 



r lor Ic 





luously, the trequency is shown alter the name 

 and they have special characteristics Those located on ti«ed 

 structures, except SI Ignace and Chambers Island. Iransmil a 

 group ol 5 second dashes for 15.6 seconds, silent 14.5 seconds. 

 The above notes relative to sequence, characteristic and schedule 

 do not apply to 



314 

 ALPENA 308 

 in NORTH MANIT0U[3-6) (S) 



ETC , 308 I THUNDER BAY ID. [3-6 



GRAVELLY SHOAL 296! 



I DETROIT RIVER [2-5 

 AMHERSTBURG LTD BUOY I 296 



^°"^"eyLIGH'uSTl"'"^ 



I TOLEDO HARBOR [2-5 

 ^ ^ • • 292 



I SANDUSKY (I 



Washington, D. C, Mar. 1, 1949 



842041 O ' 50 IPace p. 27) No. I 



FitiURB 2-0. — Radiobeacon system. Great Lakes. 



