Radio Frequency Bands

  • The amplitude modulated (AM) radio carrier frequencies are in the range $535-1605kHz$ and used for maritime communication and aircraft navigation. Carrier frequencies $540$ to $1600kHz$ are assigned in $10kHz$ intervals.
  • The shortwave band or RF range between $1605kHz$ and $54Mhz$.
    • $1605kHz-30Mhz$ amateur radio, government, international shortwave broadcast, fixed and mobile communications.
    • $30-50Mhz$ government and non-government, fixed and mobile such as police, fire, forestry, highway and railroad.
    • $50-54Mhz$ amateur radio.
    • Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) fall in the $40-50MHz$ range and it is the proton resonance frequency range.
  • TV channels 2-4 in the range $54-72Mhz$.
  • $72-76Mhz$ reserved for government and non-government with a standard aeronautical beacon at $75Mhz$.
  • TV channels 5 and 6 between $76-88Mhz$
  • FM radio between $88-108Mhz$.
  • $108-122MHz$ for aeronautical navigation including localizers, radio ranging and airport control.
  • $122-174Mhz$ for government and non-government signals including amateur broadcasts.
  • TV channels 7-13 span between $174-216Mhz$.
  • $216-470Mhz$ fixed and mobile communications including aeronautical navigation and citizens radio.
  • $470-890Mhz$ UHF television channels 14 to 84.
    • Cellular phones $824.040-848.970Mhz$ overlap UHF.
    • $390-1550Mhz$ L-Band, satellite communication (including GPS).
  • $890-3000Mhz$ various aeronautical and amateur uses, studio-transmitter relays.
    • Radar bands between $1300-1600Mhz$.
    • $390-1550Mhz$ L-Band, satellite communication (including GPS).
    • $2450Mhz$ microwave ovens.
    • $1.6-30GHz$ 3K background radiation ($187-10mm$).

fuss/physics/electromagnetism.txt ยท Last modified: 2017/02/22 18:30 (external edit)

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