Tower & ground
| ASOS/AWOS | 133.325 |
|---|---|
| CTAF | 122.7 |
| UNICOM | 122.7 |
Approach & departure Potomac
| App/Dep | 126.75 |
|---|
By procedure & sector (2 more)
| 135.075 | APT REMARK 100 WITH GCO FREQ |
|---|---|
| 307.2 | APCH/P DEP/P |
Frequencies from FAA NASR. For planning and education only; always verify against official sources.