fm band

General info:

• FM band covers 87.8 to 108. Mhz
• Station center frequencies start at 87.9 and are spaced every 200 Khz
• stations are number 200 (87.9) to 300 (107.9).
• 87.9 thru 91.9 are reserved for non-commercial stations eg religious or educational.
• Class A,B,C determine the amount of power the station can radiate. A is the least (6KW) B 50Kw, class C 100Kw (these are erps).
• There is a separation table that limits how close in space/frequency stations can be located.

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Fm transmittors near the   AO.

• all licencses within 20 miles of the observatory with frequencies between 88 and 108 Mhz.
• fcc requirements for fm transmissions (.pdf)
  

The Ao location used was: 18:20:39.4, 66:45:10.0 .
The closest locations were:
 

Fm Stations within 20 Miles of AO

Freq (Mhz)	Dist (mi)	AzDir (degs)	Call Sign	Lat	Long
104.1	7.05	121.2	WERR	18:17:29	66:39:39
102.9	7.07	121.46	WDIN	18:17:27	66:39:39
107.3	7.69	210.21	WUCMN-FM	18:14:52.0	66:48:43.0
106.5	7.70	6.22	WNIK-FM	18:27:20	66:44:24
96.9	15.18	112.14	WNRT	18:15:41	66:32:19
88.9	15.75	138.1	WPUC-FM	18:10:27	66:35:32
92.9	15.78	196.86	WTPM-FM1	18:07:29	66:49:22
98.3	16.32	281.83	WIDI	18:23:33	66:59:46
101.9	18.47	135.19	WZAR	18:09:15	66:33:15

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