= Q codes =

Q codes are shorthands for common phrases in radio communication. Below is a
table of Q codes that I need to memorize.

| Code | Meaning                 |
| CQ   | Looking for contact     |
| QRRR | Distress signal         |
| QSO  | Make contact            |
| QRL  | Is this freq busy?      |
| QRO  | Increase power (?)      |
| QRP  | Decrease power (?)      |
| QRZ  | Who is calling?         |
| QST  | Calling all Amatuers    |


Terms
------
| Code | Meaning                                         |
| QRM  | Human made interference                         |
| QRN  | Atmospheric noise                               |
| QSB  | Signal fading (variation is strength over time) |