What does RF stand for?

What does RF mean?

RF	Radio Frequency Governmental » NASA
RF	Radio Frequency Governmental » Transportation
RF	Radio Frequency Governmental » Military
RF	Radio Frequency Community » Media
RF	Radio Frequency Computing » Drivers
RF	Radio Frequency Academic & Science » Electronics
RF	Radio Frequency Computing » Telecom
RF	Radio Frequency Academic & Science » Amateur Radio
RF	Request For Governmental » Military
RF	Royalty Free Community » Law
RF	Russian Federation Regional » Countries
RF	Renal failure Medical » Physiology
RF	Resonance Frequency Academic & Science » Electronics
RF	Resonance Frequency Academic & Science » Chemistry
RF	RangeFinder Governmental » Military
RF	Rheumatoid factor Medical » Laboratory
RF	Rheumatoid Factor Medical » Physiology
RF	Runs For Community » Sports
RF	Related Field Academic & Science » Universities
RF	Right Front Governmental » US Government
RF	Right Front Governmental » Military
RF	Right Front Governmental » NASA
RF	Right Front Medical » Physiology
RF	Right Front Medical » Oncology
RF	Right Front Community