| Navaid Facility ID: | CMJ |
| Official Navaid Facility ID: | CMJ |
| Navaid Facility Type: | NDB |
| Navaid Name: | Clam Cove |
| City: | KETCHIKAN |
| State: | ALASKA |
| FAA Region: | |
| Latitude: | 55-20-31.824N (55.3422) |
| Longitude: | 131-41-26.755W (-131.6908) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | FEDERAL AVIATION ADMIN |
| Operator: | FEDERAL AVIATION ADMIN |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | HW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 17.4 E as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZAN (ANCHORAGE) |
| ARTCC Low Altitude ID (Name): | ZAN (ANCHORAGE) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| CMJ | NDB | NDB UNUSBL BYD 15 NM. |
| Navaid ID | Navaid Facility Type | Magnetic Variance | Airspace Fixes |
|---|---|---|---|
| CMJ | NDB | 17.9 E | UCARU AK - PA |