HF Frequencies
Oct 26, 2024
Huy Le
2 minute read
WIKI LAYOUT

160 m (1.8-2.0 MHz)

  • Mode: CW
  • Best for: Winter evenings, DX
  • Why: Long antennas required, high atmospheric noise, but offers potential for long-distance communication.

80 m (3.5-4.0 MHz)

  • Mode: SSB (lower sideband)
  • Best for: Winter evenings, local communication
  • Why: Long antennas required, but can provide good local coverage and is often used for Nets (organized group conversations).

60 m (5.3-5.4 MHz)

  • Mode: USB
  • Best for: Emergency response, digital modes
  • Why: Channelized band with limited use, but can be useful for specific purposes.

40 m (7.0-7.3 MHz)

  • Mode: CW, SSB (lower sideband)
  • Best for: General-purpose band, both day and night
  • Why: Manageable antenna size, good propagation characteristics, and a wide range of activities.

30 m (10.1-10.15 MHz)

  • Mode: CW, data
  • Best for: DX, experimenting with low-power communication
  • Why: Power restrictions, but can offer excellent propagation conditions.

20 m (14.0-14.35 MHz)

  • Mode: USB, PSK31, JT65
  • Best for: General-purpose band, both day and night
  • Why: Small antenna size, good propagation characteristics, and a wide range of activities, including digital modes.

17 m (18.068-18.168 MHz)

  • Mode: USB
  • Best for: Occasional DX
  • Why: Narrow band with limited use, but can sometimes offer opportunities for long-distance communication.

15 m (21.0-21.45 MHz)

  • Mode: USB
  • Best for: DX, during sunspot cycles
  • Why: Can offer long-distance communication, especially during periods of high solar activity.

12 m (24.89-24.99 MHz)

  • Mode: USB
  • Best for: Occasional DX
  • Why: Not as commonly used as other bands, but can provide opportunities for long-distance communication.

10 m (28.0-29.7 MHz)

  • Mode: USB, FM (above 29.5 MHz)
  • Best for: DX, during midday
  • Why: Technician class licensees have full data and voice privileges, can offer excellent propagation conditions during midday.