| Callsign | NN4NN |
| Radio Service | HV - Vanity |
| License Status | C - Canceled |
| Grant Date | 2020-12-29 |
| Effective Date | 2021-01-06 |
| Expire Date | 2030-12-29 |
| Cancel Date | 2025-12-30 |
| Last Action Date | 2025-12-30 |
| End Date | 2025-12-30 |
| Available Date | 2027-12-31 |
| Applicant Type | B - Amateur Club |
| Entity Name | MT HOLLY DX ASSOCIATION |
| Street Address / Locality | 11321 Grandview Dr Dade City, FL 33525 |
| County | Pasco County |
| Zip Location | 28°20'29.9"N 82°11'54.2"W |
| Maidenhead | EL88vi |
| FRN | 0003107380 |
| Licensee ID/SGIN | L00181486 / 000 |
| Licensee Class | |
| Callsign Group | B - 2x2 |
| ULS/Geo Region | 4 / 4 / FL |
| Prev Callsign / Prev Class | NY3DX |
| Next Callsign | AE7EB |
| Trustee Callsign / Trustee Name | K3SV Gillenwater, William L |
| Vanity Type | F - By List (Club) |
| ULS File Number | 0009356857 |
| Phonetic weight / Morse weight | 14 / 46 |