29-04-2015, 07:49 PM
10 and Q Codes were designed to shorten communication broadcasts.
CB Radio adopted the 10-codes which were initially assigned to Police Radio (however, the actual origin may be in question).
There are 200 10-codes, 10-1 through to 10-200.
Most all of the codes you will notice have law-enforcement meanings and thus it is obvious that the 10-codes were adopted from Police use.
Q-Codes were originally adopted for shipping and long-distance communication.
CB Radio operators commonly use a mixture of both 10 and Q Codes and especially when communicating long distances (overseas countries).
As a CB Operator, you will not have to remember all 200 of the 10-codes – just a handful of commonly used ones like these:
• 10-4 - Message Received/Acknowledged
• 10-7 - Off the air (“I am going 10-7”)
• 10-9 - Repeat the message
• 10-20 - My/Your location (“What is your 10-20?”)
• 10-27 - I am moving/changing to frequency/channel
• 10-41 - Please move/change to frequency/channel
Here are some commonly used Q Codes:
• CQ - "Seek you." General call
• CQ DX - Seek contact with any distant station(s)
• QRO - Increase power
• QRP - Decrease power
• QRT - Stop sending/off the radio.
• QRM - Interference from other RF-Signals/Stations
• QSA - What is the signal strength?
• QSL - Acknowledge receipt
• QSM - Repeat last message
• QSY - Switching frequencies
• QTH - Location
• QTR - Exact time
CB Radio adopted the 10-codes which were initially assigned to Police Radio (however, the actual origin may be in question).
There are 200 10-codes, 10-1 through to 10-200.
Most all of the codes you will notice have law-enforcement meanings and thus it is obvious that the 10-codes were adopted from Police use.
Q-Codes were originally adopted for shipping and long-distance communication.
CB Radio operators commonly use a mixture of both 10 and Q Codes and especially when communicating long distances (overseas countries).
As a CB Operator, you will not have to remember all 200 of the 10-codes – just a handful of commonly used ones like these:
• 10-4 - Message Received/Acknowledged
• 10-7 - Off the air (“I am going 10-7”)
• 10-9 - Repeat the message
• 10-20 - My/Your location (“What is your 10-20?”)
• 10-27 - I am moving/changing to frequency/channel
• 10-41 - Please move/change to frequency/channel
Here are some commonly used Q Codes:
• CQ - "Seek you." General call
• CQ DX - Seek contact with any distant station(s)
• QRO - Increase power
• QRP - Decrease power
• QRT - Stop sending/off the radio.
• QRM - Interference from other RF-Signals/Stations
• QSA - What is the signal strength?
• QSL - Acknowledge receipt
• QSM - Repeat last message
• QSY - Switching frequencies
• QTH - Location
• QTR - Exact time
