La FCC (Federal Communications Commission) ha autorizzato i radioamatori statunitensi ad operare a 472-479 KHz e 135,7-137,8 kHz in base secondaria , previa notifica l’autorità competente .
14 september 2017 by QRZ.com
Emergency Frequencies – Various frequencies are currently being used in IARU Region 2 to support emergency relief efforts.
Hurricane Watch Net
14.325.00 MHz, 7.268.00 MHz
14.265 MHz, 7.262 MHz
60 Meters may be in use by FEMA for Interoperable communications. Mexico
7060 kHz and 7080 kHz to deal with the Earthquake and Hurricane Katia
14290 kHz and 7190 kHz ( Voice or PACTOR )
US Wide Area traffic handling
14115 kHz, 7115 kHz and if necessary 10115 kHz ( all CW )
Carribean Emergency and Weather Net ( CEWN )
3815 kHz, 7188 kHz and possibly 7162 kHz