| Callsign | KB3YKP |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 2012-03-28 |
| Effective Date | 2012-03-28 |
| Expire Date | 2022-03-28 |
| Cancel Date | 2024-03-29 |
| Last Action Date | 2024-03-29 |
| End Date | 2022-03-28 |
| Available Date | 2024-04-29 |
| Applicant Type | I - Individual |
| Entity Name | O'Callaghan, Christopher H |
| Street Address / Locality | 954 Featherstone St GAITHERSBURG, MD 20878 |
| County | Montgomery County |
| Zip Location | 39°06'45.5"N 77°15'01.6"W |
| Maidenhead | FM19ic |
| FRN | 0021640263 |
| Licensee ID/SGIN | L01699324 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 3 / 3 / MD |
| Prev Callsign / Prev Class | |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0005138483 |
| Phonetic weight / Morse weight | 11 / 82 |