Amateur Radio Callsign: KE3NJ
|   | KE3NJ | 
| LETTERMAN, MARK A HERNDON, PA (United States) | |
| License Status | Active | 
|---|---|
| Operator Class | Amateur Extra | 
| Name | LETTERMAN, MARK A | 
| Granted | 2022-03-26 | 
| Expires | 2032-03-26 | 
| Address | 
 
                 
                