(version 2.1.8, updated 2006-08-19 by WA5ZNU)
| Mode | Description |
|---|---|
| Aurora | AUR |
| Aurora-E | AUE |
| Back scatter | BS |
| EchoLink | ECH |
| Earth-Moon-Earth | EME |
| Sporadic E | ES |
| Field Aligned Irregularities | FAI |
| F2 Reflection | F2 |
| Ionoscatter | ION |
| IRLP | IRL |
| Meteor scatter | MS |
| Terrestrial or atmospheric repeater or transponder | RPT |
| Rain scatter | RS |
| Satellite | SAT |
| Trans-equatorial | TEP |
| Tropospheric ducting | TR |