[EAS] Typical EAS monitoring sources in state EAS plans

Sean Donelan sean at donelan.com
Sun Aug 22 17:49:20 CDT 2021


I only looked at about dozen state EAS plans.

Particpating (end-node) stations were generally assigned 2 or 3 sources.

Primary (local or relay) stations were generally assigned 4 or 5 sources,

Each state organizes things slightly different (names, and numbers). 
Ignoring the cosmetic differences, functionally the mandatory parts are 
mostly the same.

There is a Sage bias in most state EAS plans.  Dayton, Crown and the 
built-in DASDEC and Trilithic radios come in sets of 3 receivers, which 
is also reflected in most state EAS plans.

Participating (end-node) stations:

Required #1	LP-1 (occasionally an alternate language LP-S or LP-K)
Required #2	LP-2

Recommended #1	Weather Radio
Recommended #2	Local Alerting Network (or LRN, rare, using IPAWS instead)

Supplement #1	State Alerting Network (or SRN or EMNET or GSSNET)
Supplement #2	Closed circuit or additional national source (phone line, 
NPR, Premiere, SiriusXM)

CAP #1 (Required)	IPAWS server
CAP #2 (Recommended)	State CAP server (only a few states)

Primary (local, state and state relay) stations had the more exotic 
receivers. Most particpating (end-node) stations only had AM/FM or weather 
radios and CAP internet.



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