rjr@mgweed.UUCP (10/12/83)
LAKE MICHIGAN AREA MARINE RADIOBEACONS (USCG)
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Most marine radiobeacons must share a group frequency
with other beacons. Beacons in the same general
geographical area are divided into groups of up to six
beacons per single frequency, with the sequence repeated
continually. Each radiobeacon transmits for at least one
minute out of the total period of six minutes (SEQ 1
starts on the hour). In the following list, where no SEQ
number is shown, that station is a low powered local
beacon that transmits continuously, transmitting either
a Morse character or half second dashes. The last ten
seconds of the sequential beacon's transmission is a
long dash for maximum accuracy while taking direction
fixes. ID's in "()" are those monitored but not
appearing in Coast Guard documentation. Sequential
beacons generally have a range of 40 to 100 miles, while
the local ones are not given. The chart below shows SEQ
numbers vs. minutes after the hour.
SEQ 1 2 3 4 5 6
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MIN: 0 1 2 3 4 5
6 7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22 23
24 25 26 27 28 29
30 31 32 33 34 35
36 37 38 39 40 41
42 43 44 45 46 47
48 49 50 51 52 53
54 55 56 57 58 59
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LAKE MICHIGAN AREA MARINE RADIOBEACONS (USCG)
285 to 335 kHz
KHZ ID SEQ LOCATION
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285 RT ????
286 Sherwood Pt., Wi.
288 (FR) Frankfort, Mi.
294 (J)
298 AA 5 Chicago, Il.
298 C 4 Muskegon, Mi.
298 E 1 N. Manitou Is., Mi.
298 M 3 Milwaukee, Wi.
298 P 2 Pt. Betsie, Mi.
298 Y 6 Indiana Harbor, In.
302 C 3 St. Martin, Mi.
302 OT 1,4 Detour Reef, Mi.
302 W 2 Poe Reef, Mi.
302 X 6 Grays Reef, Mi.
302 Z 5 Lansing Shoal, Mi.
304 W Waukeegan, Il.
308 G 3 Kewaunee, Wi.
308 K 2 Green Bay, Wi.
308 L 6 Rawley Pt., Wi.
308 OE 1 Sturgeon Bay, Wi.
308 OT 5 Ludington, Mi.
308 Y 4 Minn. Shoal, Mi.
316 (GO) Grand Haven, Mi.
318 Port Inland, Mi.
320 (KX) Calumet Harbor, In.
322 Round Is. Passage, Mi.
324 Plum Is., Wi.
324 (SY) Sheboygan, Wi.
329 Manitowoc, Wi.