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FM Distance Separation Requirements

Table A, Section 73.207
Relation	Co-Channel (Same Frequency)	200 kHz (First-Adjacent Channel)	400 or 600 kHz (Second- or Third-Adjacent Channel)	10.6 or 10.8 MHz (I.F. Channel)

A to A	115	072	031	10
A to B1	143	096	048	12
A to B	178	113	069	15
A to C3	142	089	042	12
A to C2	166	106	055	15
A to C1	200	133	075	22
A to C0	215	152	086	25
A to C	226	165	095	29
B1 to B1	175	114	050	14
B1 to B	211	145	071	17
B1 to C3	175	114	050	14
B1 to C2	200	134	056	17
B1 to C1	233	161	077	24
B1 to C0	248	180	087	27
B1 to C	259	193	105	31
B to B	241	169	074	20
B to C3	211	145	071	17
B to C2	241	169	074	20
B to C1	270	195	079	27
B to C0	272	214	089	31
B to C	274	217	105	35
C3 to C3	153	099	043	14
C3 to C2	177	117	056	17
C3 to C1	211	144	076	24
C3 to C0	226	163	087	27
C3 to C	237	176	096	31
C2 to C2	190	130	058	20
C2 to C1	224	158	079	27
C2 to C0	239	176	089	31
C2 to C	249	188	105	35
C1 to C1	245	177	082	34
C1 to C0	259	196	094	37
C1 to C	270	209	105	41
C0 to C0	270	207	096	41
C0 to C	281	220	105	45
C to C	290	241	105	48


FM Station Separation Requirements, 47 CFR Section 73.207 The above table lists the FM spacing standards contained in Table A of 47 CFR Section 73.207 of the FCC's rules for the various classes of FM commercial radio stations in the USA. For further information, go to the FCC's website, www.fcc.gov/mb/audio/spacing/