Sec. 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 Sec. 11.51, 11.52 and 11.61. They 
may transmit EAS State or Local Area messages at any time without prior 
notice.