§  11.18   EAS Designations.

   (a) National Primary (NP) is a source of EAS Presidential messages.

   (b) Local Primary (LP) is a source of EAS Local Area messages. An LP
   source is responsible for coordinating the carriage of common emergency
   messages from sources such as the National Weather Service or local
   emergency management offices as specified in its EAS Local Area Plan.
   If it is unable to carry out this function, other LP sources in the
   Local Area may be assigned the responsibility as indicated in State and
   Local Area Plans. LP sources are assigned numbers (LP–1, 2, 3, etc.) in
   the sequence they are to be monitored by other broadcast stations in
   the Local Area.

   (c) State Primary (SP) is a source of EAS State messages. These
   messages can originate from the Governor or a designated representative
   in the State Emergency Operating Center (EOC) or State Capital.
   Messages are sent via the State Relay Network.

   (d) State Relay (SR) is a source of EAS State messages. It is part of
   the State Relay Network and relays National and State common emergency
   messages into Local Areas.

   (e) Participating National (PN) sources transmit EAS National, State or
   Local Area messages. The EAS transmissions of PN sources are intended
   for direct public reception.

   (f) Non-participating National (NN) sources have elected not to
   participate in the National level EAS and hold an authorization letter
   to that effect. Upon activation of the national level EAS, NN sources
   are required to broadcast the EAS codes, Attention Signal, the sign-off
   announcement in the EAS Operating Handbook and then stop operating. All
   NN sources are required to comply with § 11.51, 11.52 and 11.61. They
   may transmit EAS State or Local Area messages at any time without prior
   notice.