| Callsign | KN6PBK |
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2021-05-27 |
| Effective Date | 2021-06-10 |
| Expire Date | 2031-05-27 |
| Cancel Date | 2021-07-03 |
| Last Action Date | 2021-07-03 |
| End Date | 2021-07-03 |
| Available Date | 2023-07-04 |
| Applicant Type | I - Individual |
| Entity Name | Castillo Sierra, Antonio Jose |
| Street Address / Locality | 444 ALASKA AVE STE BCM788 TORRANCE, CA 905033902 |
| County | Los Angeles County |
| Zip Location | 33°50'22.1"N 118°21'13.3"W |
| Maidenhead | DM03tu |
| FRN | 0030952089 |
| Licensee ID/SGIN | L02453009 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 6 / 6 / CA |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | AJ6DX |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0009581769 |
| Phonetic weight / Morse weight | 12 / 72 |