47 CFR § 80.364
Frequencies for VHF digital small message services (VDSMS)
February 16, 2021
Frequencies in the 156-162 MHz band may be used for VHF digital small message services (VDSMS) complying with RTCM 12301 (incorporated by reference, see §80.7), except as follows
VHF-FM Channels Not Available for Digital Small Message Service
Open Table
| Channel | Frequency (MHz) |
|---|---|
| 01A | 156.050 |
| 63A | 156.175 |
| 05A | 156.250 |
| 65A | 156.275 |
| 06 | 156.300 |
| 66A | 156.325 |
| 67 | 156.375 |
| 70 | 156.525 |
| 12 | 156.600 |
| 13 | 156.650 |
| 73 | 156.675 |
| 14 | 156.700 |
| 74 | 156.725 |
| 15 | 156.750 |
| 75 | 156.775 |
| 16 | 156.800 |
| 76 | 156.825 |
| 17 | 156.850 |
| 77 | 156.875 |
| 20A | 157.000 |
| 22A | 157.100 |
| AIS 1⁄2 | 161.975/162.025 |
[81 FR 90747, Dec. 15, 2016]
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