Operating Aids

This section is devoted to helping you be a better ham.

Also see our Online Resources page in the Education and Training section.

  • LSB or USB?
    Why do we use Lower Sideband (LSB) on some HF bands and Upper Sideband (USB) on others?

  • Metric System.
    A brief description of the International System of Units (SI), with additional pages listing those units, prefixes and conversions.