Tower & ground
| ASOS/AWOS | 128.625 |
|---|---|
| Clearance | 124.6 |
| CTAF | 123.05 |
| UNICOM | 123.05 |
Approach & departure Potomac
| App/Dep | 118.2 · secondary |
|---|---|
| App/Dep | 126.75 |
By procedure & sector (2 more)
| 288.275 | APCH/S DEP/S |
|---|---|
| 307.2 | APCH/P DEP/P |
Frequencies from FAA NASR. For planning and education only; always verify against official sources.