47 C.F.R. § 80.1159 Narrow-band direct-printing (NB-DP).
Title 47 - Telecommunication
NB-DP is a form of telegraphy for the transmission and receipt of direct printing public correspondence. Ships must use NB-DP techniques only with authorized public coast stations.
Title 47: Telecommunication
PART 80—STATIONS IN THE MARITIME SERVICES
Subpart X—Voluntary Radio Installations
Voluntary Telegraphy
§ 80.1159 Narrow-band direct-printing (NB-DP).
