The best replacement for rf is ir.

The best alternatives to rf are rated as following:
★★★★★  ir
★★★★  bluetooth
★★  ir remote
★★  if
★  microwave
★  bluetooth mouse
★  infrared
★  bluetooth headphones
★  ir wireless
★  ir headphones
★  line mode
★  dlp link
  rtj
  ff flange
  dlp 3d glasses
  emf
  ipl
  log molecular weight
  ir repeater
  av
  log mw
  rm
  cavitation
  uhf
  molecular weight
  infrared headphones
  scart
  fso
  baseband

Your alternative for rf is not listed? Suggest!
Speaking about rf, one probably shouldn't forget about cavitation.

Other search terms related to rf and their ratings are:
★★★★★ cavitation
★★★★ ipl
★★ harmony 900
★ wm
You have in mind a companion for rf and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of rf in all years. Click on graph for more.
rf
ir
bluetooth