LTE Band 27, designated as E850 Lower, is part of the extended 850 MHz spectrum. Similar to Band 26, it repurposes frequencies that were historically associated with 2G and 3G services for contemporary LTE usage. Positioned within the sub-1 GHz range, it inherently provides coverage benefits suitable for broader areas and challenging terrains. However, despite its technical merits, Band 27 has not seen widespread adoption. Its use is limited due to its narrow channel widths, making it one of the less common LTE bands in the global spectrum landscape.
Within Australia, the E850 Lower LTE band has been selected by the ACMA as the proposed band for Australian Public Safety Mobile Broadband (PSMB). The 809 to 814 MHz and 854 to 859 MHz was withheld from re-allocation by the Minister for Communications, Cyber Safety and the Arts, reserving it for use by emergency services.