| Callsign | N8DDM |
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2020-03-31 |
| Effective Date | 2020-03-31 |
| Expire Date | 2030-04-23 |
| Cancel Date | |
| Last Action Date | 2020-03-31 |
| End Date | 2030-04-23 |
| Available Date | 2032-04-24 |
| Applicant Type | I - Individual |
| Entity Name | MARTZALL, DOUGLAS D |
| Street Address / Locality | 4190 S IDDINGS RD WEST MILTON, OH 45383 |
| County | Miami County |
| Zip Location | 39°57'20.1"N 84°20'35.5"W |
| Maidenhead | EM79tw |
| FRN | 0004395968 |
| Licensee ID/SGIN | L00321888 / 000 |
| Licensee Class | G - General |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 8 / 8 / OH |
| Prev Callsign / Prev Class | WD8DBO P - Technician Plus |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | 0009029992 |
| Phonetic weight / Morse weight | 9 / 56 |