| Callsign | N6MMK |
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2004-01-12 |
| Effective Date | 2005-03-14 |
| Expire Date | 2014-01-04 |
| Cancel Date | 2007-03-20 |
| Last Action Date | 2007-03-20 |
| End Date | 2007-03-20 |
| Available Date | 2009-03-21 |
| Applicant Type | I - Individual |
| Entity Name | HOLDENER, DONALD K |
| Street Address / Locality | 1538 CARL AVE MILPITAS, CA 95035 |
| County | Santa Clara County |
| Zip Location | 37°26'37.1"N 121°52'29.8"W |
| Maidenhead | CM97bk |
| FRN | 0001904481 |
| Licensee ID/SGIN | L00193159 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 6 / 6 / CA |
| Prev Callsign / Prev Class | KB6HEM P - Technician Plus |
| Next Callsign | K6ATF |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0002084762 |
| Phonetic weight / Morse weight | 8 / 54 |