Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 MHz and 3 GHz, also known as the decimetre band as the wavelengths range from one meter to one decimetre.ltra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 MHz and 3 GHz, also known as the decimetre band as the wavelengths range from one meter to one decimetre.
The San Diego Unified Port District was created in 1962 after the California State legislature passed Senate Bill 41 and the San Diego County Board of Supervisors certified it. The citizens, in 1964, approved a $10.9 million bond for capital improvements.
With the increase in smuggling activity in recent years along Southern California's coastal borders, additional Border Patrol agents have been assigned to combat the maritime smuggling of humans and drugs. As a result, San Diego Sector's Primary Operational Domain has increased from 91 coastal border miles to 114.