SECURE

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Operation SECURE (State Emergency Capability Using Radio Effectively) - intrastate/interstate and state/federal interoperability MF and HF network, similar in scope and function to SHARES. Analogous to the VHF/UHF nationwide interoperability frequency plans. Like many US government HF radio networks, Operation SECURE uses frequencies allocated to the maritime mobile service and the fixed/mobile services.

Some states appear to not have current/valid licenses for the SECURE network frequencies. Like the SHARES network, SECURE is used as a backup for, and in conjunction with Internet teleconferencing systems, secure dedicated telephone links (including hardened four-line systems) between state Emergency Operations Centers, FEMA HQ and other important government offices and UHF/SHF/EHF SATCOM systems.

It is important to note that state licenses for the SECURE and SHARES systems will show frequencies licensed in the "center frequency" format, not the carrier frequency or dial frequency format.

The FCC database will show the "center" frequency in MHz notation for USB voice as 1.4 kHz above the dial frequency/carrier frequency (what your radio dial actually says). For example, 2326 kHz or 2.326 MHz will show up as 2.3274 MHz (2327.4 kHz) on a state license. 5195 kHz or 5.195 MHz will show up as 5.1964 MHz (5196.4 kHz), and so on. Simply subtract 1.4 kHz from the listed frequency to find the carrier frequency or dial frequency with licenses formatted in this way.

State licenses will generally be authorized for 6K00A3E, 2K80J3E, 2K80J2B and 100HA1A emissions.


  • 2226 kHz USB - OK
  • 2264 kHz USB - AK
  • 2326 kHz USB - AL CA CO CT DC FL ID IL IN LA MA ME MI MO MS MT NE NH NJ NV NY OH OR RI SC TN TX VA VT WA WY Interstate Coordination
  • 2411 kHz USB - GU MA MO NJ RI VA VT WA
  • 2414 kHz USB - ID IL MA ME MI MO NH OR WA WY
  • 2419 kHz USB - CA CT GU MA MO OH RI TN TX VT WY
  • 2422 kHz USB - CA OH SC TX
  • 2439 kHz USB - FL MO MT
  • 2450 kHz USB - MI
  • 2463 kHz USB - FL GU MO MT VA
  • 2466 kHz USB - CO DC GU MI
  • 2471 kHz USB - CO ID
  • 2474 kHz USB - CO TN
  • 2487 kHz USB - AL IN NV
  • 2511 kHz USB - IN NV SC VA
  • 2535 kHz USB - GU ID MS
  • 2569 kHz USB - GU IL MS
  • 2587 kHz USB - DC GU NJ TX VA WA
  • 2726 kHz USB - MI VA
  • 2801 kHz USB - GU NM OK OR TX VA WA
  • 2804 kHz USB - CA ID IL MI MT NE NM OK TX Interstate Coordination Alternate
  • 2812 kHz USB - CA GU LA MT NE NY TX VA
  • 3170 kHz USB - American Red Cross ARC HF network
  • 3201 kHz USB - NY
  • 3211 kHz USB - AK
  • 3230 kHz USB - AK
  • 4460 kHz USB - AK
  • 4560 kHz USB - AK
  • 5135 kHz USB - AK AL CO CT DC ID IL IN MA ME MT NM NH NY OK OR RI SC TN VT Interstate Coordination Alternate
  • 5140 kHz USB - CA FL ID IL IN MI MO MT NM OH OK TN TX VA Interstate Coordination
  • 5167.5 kHz USB - AK Alaska emergency/calling frequency (center frequency: 5168.9 kHz)
  • 5192 kHz USB - AL CT IL LA MA ME MO NE NH RI TX VA VT WA Interstate Coordination
  • 5195 kHz USB - AK CA DC ID MS MT NJ NV OR TN TX VA WY Interstate Coordination
  • 5380 kHz USB - AK
  • 6858.1 kHz USB - American Red Cross ARC HF network (licensed frequency 6.8595 MHz 6859.5 kHz)
  • 7418 kHz USB - AK
  • 7477 kHz USB - CT DC ID LA MA MI MO MS MT NM NY OK RI VT Interstate Coordination Alternate
  • 7480 kHz USB - AK CA IL LA MT NM NV OK OR SC TN Interstate Coordination Alternate
  • 7549.1 kHz USB - American Red Cross ARC HF network
  • 7697.1 kHz USB - American Red Cross ARC HF network
  • 7802 kHz USB - CA CO IL IN MO OH OR TX daytime only
  • 7805 kHz USB - AL CA CO CT DC FL ID IN LA MA ME MI MO MS MT NE NH NJ NM NV OH OK OR RI TN TX VA VT WA WY Interstate Coordination
  • 7932 kHz USB - FL ID IL MT NV SC TN TX WY
  • 7935 kHz USB - AL IL IN MO NE OR TX WA



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