| Navaid Facility ID: | EFW |
| Official Navaid Facility ID: | EFW |
| Navaid Facility Type: | NDB |
| Navaid Name: | Jefferson |
| City: | JEFFERSON |
| State: | IOWA |
| FAA Region: | |
| Latitude: | 42-00-48.457N (42.0135) |
| Longitude: | 094-20-33.663W (-94.3427) |
| Lat/Long Survey Accuracy: | 1 second or better |
| Owner: | JEFFERSON ARPT COMM |
| Operator: | JEFFERSON ARPT COMM |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 0.9 E as of 7/5/2024 |
| ARTCC High Altitude ID (Name): | ZMP (MINNEAPOLIS) |
| ARTCC Low Altitude ID (Name): | ZMP (MINNEAPOLIS) |