HAM RADIO INFO: 10-METER, CB, AND Q-CODES
=========================================

Published: January 3, 2025
Author: Daniel Conderman
Context: Recovered Conderman.Group radio reference sheet
Original URL: https://conderman.group/2025/01/ham-radio-info/


10-METER BAND (AMATEUR RADIO)
-----------------------------

The 10-meter band spans 28.000 MHz to 29.700 MHz and is segmented for
different modes:

  Frequency (MHz)       Usage
  --------------------  --------------------------------
  28.000 - 28.070       CW (Morse code)
  28.070 - 28.150       Digital modes (FT8, RTTY)
  28.150 - 28.300       Beacons
  28.300 - 28.500       SSB (phone, USB)
  28.500 - 29.000       SSB, AM (limited)
  29.000 - 29.200       AM
  29.200 - 29.300       Satellite operations
  29.300 - 29.510       FM
  29.520 - 29.700       FM repeaters


GENERAL Q-CODES
---------------

  QRL  Are you busy? / I am busy.
  QRM  Is my signal being interfered with? / Your signal is being
       interfered with.
  QRN  Are you troubled by static? / I am troubled by static.
  QRO  Shall I increase power? / Increase power.
  QRP  Shall I decrease power? / Decrease power.
  QRQ  Shall I send faster? / Send faster.
  QRS  Shall I send slower? / Send slower.
  QRT  Shall I stop sending? / Stop sending.
  QRU  Do you have anything for me? / I have nothing for you.
  QRV  Are you ready? / I am ready.
  QRX  When will you call me again? / I will call you again at ___.
  QRZ  Who is calling me? / You are being called by ___.


LOCATION AND SIGNAL REPORTS
---------------------------

  QTH  What is your location? / My location is ___.
  QTR  What is the time? / The time is ___.
  QSB  Are my signals fading? / Your signals are fading.
  QSL  Can you acknowledge receipt? / I acknowledge receipt.
  QSO  Can you communicate with ___? / I can communicate with ___.


CONTESTING AND OPERATING
------------------------

  QSY  Shall I change frequency? / Change frequency to ___.
  QRM  Are you being interfered with? / You are being interfered with.
  QRP  Operate with low power.
  QRS  Send more slowly.


11-METER BAND (CITIZENS BAND / CB RADIO)
----------------------------------------

CB operates on 40 channels, each spaced 10 kHz apart. Frequencies are in AM
unless otherwise specified.

  Channel     Frequency (MHz)
  ----------  ---------------
  1           26.965
  2           26.975
  3           26.985
  4           27.005
  5           27.015
  6           27.025
  7           27.035
  8           27.055
  9           27.065 (Emergency)
  10          27.075
  11          27.085
  12          27.105
  13          27.115
  14          27.125
  15          27.135
  16          27.155
  17          27.165
  18          27.175
  19          27.185 (Highway)
  20          27.205
  21          27.215
  22          27.225
  23          27.255
  24-40       27.265 - 27.405