scope:

This standard establishes minimum requirements for single channel, narrowband, medium and high frequency (300 KHz - 30 MHz) radiotelegraph systems used in Government maritime mobile telecommunications. Manual on-off keying (i.e., Morse code operation) is not within the scope of this standard.

This standard is to facilitate the interoperability of maritime mobile telecommunication facilities of the Federal Government.

This standard shall be used, to the extent specified herein, by all Federal departments and agencies in the design and procurement of maritime mobile radiotelegraph systems for medium and high frequency operation.