| Callsign | KN4OAO |
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2018-07-23 |
| Effective Date | 2018-07-23 |
| Expire Date | 2028-07-23 |
| Cancel Date | 2019-01-01 |
| Last Action Date | 2019-01-01 |
| End Date | 2019-01-01 |
| Available Date | 2021-01-02 |
| Applicant Type | B - Amateur Club |
| Entity Name | Smithsonian Institution Amateur Radio Group |
| Street Address / Locality | 828 Mildenhall Ct Purcellville, VA 20132 |
| County | Loudoun County |
| Zip Location | 39°10'02.0"N 77°43'14.1"W |
| Maidenhead | FM19de |
| FRN | 0027718626 |
| Licensee ID/SGIN | L02202382 / 000 |
| Licensee Class | |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | |
| Next Callsign | NN3SI |
| Trustee Callsign / Trustee Name | N4NPG Weise, John H |
| Vanity Type | |
| ULS File Number | 0008292383 |
| Phonetic weight / Morse weight | 13 / 70 |