n28 (700 MHz)

Known as the APT 700 band, the n28 band is a Frequency Division Duplexing (FDD) band designated for 5G NR networks, with a central frequency around 700 MHz. The 'APT' in its name stands for 'Asia-Pacific Telecommunity', which developed the APT 700 MHz plan to harmonise the use of the 700 MHz spectrum for mobile broadband across the Asia-Pacific region. Originally allocated for television broadcasting, this band has been extensively repurposed for 4G communication. The lower frequency of the APT 700 band allows for excellent coverage and signal penetration, ideal for wide-area coverage in both urban and rural settings. The band provides exceptional geographic coverage although its large wavelength limits the effectiveness of higher-order MIMO systems and as such networks are generally limited to 2x2 MIMO. n28 is one of the most important frequency bands in Australia and New Zealand, but also used across the wider Asia-Pacific, EU, and South American regions.