When FEMA issues an IPAWS test or alert, it includes a “signature certificate.” This operates similar to a password for accessing different sites or files on a computer. In the case of a message from FEMA, a message without a correct signature the EAS device should ignore the message.
On April 26, 2021, the Required Weekly Test (RWT) from IPAWS was transmitted with an incorrect signature. The test messages had a mismatch between the digest inside the message, and the digest computed by receivers. This is a part of the validation for an alert, and checking it is required by FCC Rule 11.56(c): “EAS Participants shall configure their systems to reject all CAP-formatted EAS messages that include an invalid digital signature.”
Continue reading Stations Should Note Reason for IPAWS April 26 RWT Failure
The SBE filed comments on Oct. 29, 2018, with the FCC in response to the notice of proposed rulemaking (FCC 18-91), released July 13, 2018. That notice sought comment on various proposals for transitioning all or part of the 3.7-4.2 GHz band for flexible use, terrestrial mobile spectrum, and explores options for more efficient and intensive fixed use of the same band, all while protecting incumbent C-Band satellite earth stations from harmful interference.
The SBE comments constitute a counterproposal that offers a reasonable alternative to dividing the 3.7-4.2 GHz band, a reverse auction, or other action that would not protect incumbent C-band receive-only earth stations. The SBE suggests that, given the huge number of C-band registrations since the opening of the window (now reportedly greater than 16,000), the FCC’s initial premise that the C-Band could be shared with 5G as an overlay was simply wrong.
Recognizing that the European 5G proposal is 3.4-3.8 GHz, and since that offers 1 MHz of overlap with the U.S. proposal, the U.S, should adopt the European allocation, put the commercial broadband providers in the 3.4-3.7 GHz band and use the small overlap segment with C-band for local, private 5G networks critical for next-generation manufacturing and industrial applications. That is actually workable with C-band in the 100 MHz overlap segment. It leaves the vast majority of the spectrum, 3.8-4.2 GHz, intact with no 5G.
In contrast to other proposals, nothing is lost for current C-band users with the SBE plan. 5G moves into military radar spectrum, which was already designated years ago for broadband reallocation as part of the National Broadband Plan.
Read the SBE filing.
(By Chris Scherer, SBE Communications Director) The Society of Broadcast Engineers, the association for broadcast and multimedia technology professionals, announces the results of the 2018 election for the national board of directors. Jim Leifer, CPBE, was re-elected as the society’s president. Leifer is senior manager of broadcast operations at American Tower Corporation, Andover, MA. Continue reading SBE National Re-elects Jim Leifer as President
The Federal Emergency Management Association (FEMA) has announced that a National EAS test will be sent on Thursday, Sept. 20, 2018. There is a difference between this test and the two previous tests. At 2:18 p.m. Eastern Daylight Time (EDT), FEMA will send a Wireless Emergency Alert (WEA) test message to all WEA capable wireless devices throughout the entire United States and territories. Immediately following the WEA nationwide end-to-end test, at 2:20 p.m. EDT, FEMA will conduct a live test of the Emergency Alerting System (EAS). All EAS participants are required to participate in this nationwide test. The EAS message will be disseminated via the Integrated Public Alert and Warning System (IPAWS).
Stations are encouraged to verify that their EAS units are communicating correctly with the IPAWS server. Review your station logs (which should be checked once each week by the chief operator) to ensure you are receiving the Required Weekly Test (RWT) from IPAWS. This RWT is fed every Monday at 11:00 a.m. local time. Contact your equipment representative for details on setting up your EAS decoder to properly receive and relay the National test.
EAS participants are reminded that they are required to register with the EAS Test Reporting System (ETRS) and must complete the filing of ETRS Form One on or before Aug. 27, 2018. Then on or before 11:59 p.m. EDT, Sept. 20, 2018, EAS participants must file the day-of-test information sought by ETRS Form Two on or before Nov. 5, 2018, EAS participants must file the detailed post-test data sought by ETRS Form Three.
Filers can access ETRS by visiting the ETRS page of the Commission’s website at www.fcc.gov/general/eas-test-reporting-system. Instructional videos regarding registration and completion of the ETRS Forms are available on the ETRS page.
The Battle for the C-Band Heats Up
By Chris Imlay, SBE Legal Council
On April 19, 2018, the FCC issued a public notice of a temporary freeze on applications for new or modified fixed-satellite service earth stations and fixed microwave stations operating in the 3.7-4.2 GHz band. This is the C-Band downlink.
Continue reading Register Your C-Band Receive-Only Earth Station Now