Decimal, Binary, Octal, and Hex

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Today we talk about several different numbering schemes.  Two of which we find in the scanner radio environment.



What You Will Learn in This Week’s Podcast:

  • Decimal system can be thought of as human-readable digits.
  • These are easy to use to read and compute.
  • They are also easy to convert from one form to another.
  • While decimal works well with humans, it is not the case with computers.
  • Binary language is used for them. It has two bits 0 and 1.
  • Octal is a 8 bit system. This is how we save a little bit of room in a system.
  • 0-7 make up 8 bits.
  • Hexadecimal (Hex) is a 16 base system with values from 0 – F.
  • There are no numerical symbols that represent values greater than nine, so letters taken from the English alphabet are used, Hexadecimal A = decimal 10, and F = decimal 15.
  • I stick to decimal format when I program talk groups into my scanners.
  • When you look at Radio Reference, Trunk SysIDs and WACN are in Hex.
  • RFSS and Site ID’s are shown in Decimal with Hex in parenthesis.
  • Talk groups on Radio Reference have a column for Dec and a column for Hex.

More info:

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