RF is an abbreviation for radio frequency.
A radio frequency (RF) resonant cavity thruster, also known as an EmDrive, is a controversial design concept for a thruster that is claimed to produce thrust by reflecting microwaves internally in the device, in violation of the law of conservation of momentum and other laws of physics.
The RFU Championship, known for sponsorship reasons as the Greene King IPA Championship from 2013–14, is the second tier of the English rugby union league system and was founded in September 1987. The twelve-side league was known as National Division One and in 2009 changed from semi-professional clubs to fully professional.
An RF chain is a cascade of electronic components and sub-units which may include amplifiers, filters, mixers, attenuators and detectors..
rFactor 2 is a computer racing simulator developed by the American independent software firm Image Space Incorporated and released for Windows in 2013. Like its predecessor, rFactor, it is designed to be modified and is used by professional racing teams for driver training and race car development.
RFD-TV is an American pay television channel that is owned by Rural Media Group. The channel features programming devoted to rural issues, concerns and interests.
RF Micro Devices (also known as RFMD or RF Micro), was an American company that designed and manufactured high-performance radio frequency systems and solutions for applications that drive wireless and broadband communications.
RFA Argus is a ship of the Royal Fleet Auxiliary operated by the MoD under the Blue Ensign. Italian-built, Argus was formerly the container ship MV Contender Bezant.