Specified Low Power Radio

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Japan only - SLPR - Specified Low Power Radio. UHF low power radio service, for personal or business use. UHF 420-440 MHz bands. Very limited power (10 milliwatts), similar in scope to LPD433. SLPR is broken up into two simplex channel sets and two duplex channel sets.

Japan's 351 MHz digital radio service (which allows for 5 watts power) is closer in function to FRS, GMRS, PMR446, Thailand's 245 MHz VHF CB service, Philippines' 325 MHz Short Range Radio Service, the 350 MHz Short Range Radio system in India and UHF CB.


Duplex 421 MHz/440 MHz and simplex 422 MHz channels - Specified Low Power Radio Japan 10mw power limit 12.5 kHz channels 421.575 MHz - 421.9125 MHz, 422.05 MHz - 422.3 MHz, 440.025 MHz - 440.25 MHz

  • 421.5750 MHz - Business use - duplex (paired with 440.0250 MHz)
  • 421.5875 MHz - Business use - duplex (paired with 440.0375 MHz)
  • 421.6000 MHz - Business use - duplex (paired with 440.0500 MHz)
  • 421.6125 MHz - Business use - duplex (paired with 440.0625 MHz)
  • 421.6250 MHz - Business use - duplex (paired with 440.0750 MHz)
  • 421.6375 MHz - Business use - duplex (paired with 440.0875 MHz)
  • 421.6500 MHz - Business use - duplex (paired with 440.1000 MHz)
  • 421.6625 MHz - Business use - duplex (paired with 440.1125 MHz)
  • 421.6750 MHz - Business use - duplex (paired with 440.1250 MHz)
  • 421.6875 MHz - Business use - duplex (paired with 440.1375 MHz)
  • 421.7000 MHz - Business use - duplex (paired with 440.1500 MHz)
  • 421.7125 MHz - Business use - duplex (paired with 440.1625 MHz)
  • 421.7250 MHz - Business use - duplex (paired with 440.1750 MHz)
  • 421.7375 MHz - Business use - duplex (paired with 440.1875 MHz)
  • 421.7500 MHz - Business use - duplex (paired with 440.2000 MHz)
  • 421.7625 MHz - Business use - duplex (paired with 440.2125 MHz)
  • 421.7750 MHz - Business use - duplex (paired with 440.2250 MHz)
  • 421.7875 MHz - Business use - duplex (paired with 440.2375 MHz)
  • 421.8000 MHz - Business use - duplex (paired with 440.2500 MHz)
  • 421.8125 MHz - Personal or leisure use - duplex (paired with 440.2625 MHz)
  • 421.8250 MHz - Personal or leisure use - duplex (paired with 440.2750 MHz)
  • 421.8375 MHz - Personal or leisure use - duplex (paired with 440.2875 MHz)
  • 421.8500 MHz - Personal or leisure use - duplex (paired with 440.3000 MHz)
  • 421.8625 MHz - Personal or leisure use - duplex (paired with 440.3125 MHz)
  • 421.8750 MHz - Personal or leisure use - duplex (paired with 440.3250 MHz)
  • 421.8875 MHz - Personal or leisure use - duplex (paired with 440.3375 MHz)
  • 421.9000 MHz - Personal or leisure use - duplex (paired with 440.3500 MHz)
  • 421.9125 MHz - Personal or leisure use - duplex (paired with 440.3625 MHz)
  • 422.0500 MHz - Business use - simplex
  • 422.0625 MHz - Business use - simplex
  • 422.0750 MHz - Business use - simplex
  • 422.0875 MHz - Business use - simplex
  • 422.1000 MHz - Business use - simplex
  • 422.1125 MHz - Business use - simplex
  • 422.1250 MHz - Business use - simplex
  • 422.1375 MHz - Business use - simplex
  • 422.1500 MHz - Business use - simplex
  • 422.1625 MHz - Business use - simplex
  • 422.1750 MHz - Business use - simplex
  • 422.2000 MHz - Personal or leisure use - simplex
  • 422.2125 MHz - Personal or leisure use - simplex
  • 422.2250 MHz - Personal or leisure use - simplex
  • 422.2375 MHz - Personal or leisure use - simplex
  • 422.2500 MHz - Personal or leisure use - simplex
  • 422.2625 MHz - Personal or leisure use - simplex
  • 422.2750 MHz - Personal or leisure use - simplex
  • 422.2875 MHz - Personal or leisure use - simplex
  • 422.3000 MHz - Personal or leisure use - simplex



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