47 CFR 80.374: Provisions for frequencies in the 4000-4063 and the 8100-8195 kHz bands shared with the fixed service.

Coast station assignments in the 4000-4063 kHz band deviate from international provisions. Coast station assignments in the 4000-4063 kHz band are permitted provided that such stations must not cause interference to, and must accept interference from, stations operated by other countries in accordance with the Radio Regulations.

(a) Frequencies in the 4000-4063 kHz band. (1) The frequencies in the 4000-4063 kHz bands are available to ship and public coast stations for:

(i) Supplementary ship-to-shore duplex operations with coast stations assigned the frequencies described in § 80.371(b) of this part;

(ii) Intership simplex operations and cross-band operations;

(iii) Ship-to-shore or shore-to-ship simplex operations; or

(iv) Duplex operations with coast stations assigned in the band 4438-4650 kHz, as described in § 80.373(d) of this part.

(2) The following table describes the channelization of carrier frequencies in the 4000-4063 kHz band.

Carrier Frequencies (kHz)

4000 4015 4030 4045

4003 4018 4033 4048

4006 4021 4036 4051

4009 4024 4039 4054

4012 4027 4042 4057

(b) Frequencies in the 8100-8195 kHz band. (1) The frequencies in the 8100-8195 kHz bands are available to ship and public coast stations for:

(i) Supplementary ship-to-shore duplex operations with coast stations assigned the frequencies described in § 80.371(b) of this part;

(ii) Intership simplex operations and cross-band operations; or

(iii) Ship-to-shore or shore-to-ship simplex operations.

(2) The following table describes the channelization of carrier frequencies in the 8100-8195 kHz band.

Carrier Frequencies (kHz)

8101 8137 8167

8104 8140 8170

8107 8143 8173

8110 8146 8176

8116 8149 8179

8119 8152 8182

8122 8155 8185

8125 8158 8188

8131 8161 8191

8134 8164