| Callsign | KB9SPB |
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2008-02-13 |
| Effective Date | 2015-05-19 |
| Expire Date | 2018-04-18 |
| Cancel Date | 2015-11-07 |
| Last Action Date | 2015-11-07 |
| End Date | 2015-11-07 |
| Available Date | 2017-11-08 |
| Applicant Type | I - Individual |
| Entity Name | TROWBRIDGE, CHRISTOPHER C |
| Street Address / Locality | 4515 Harrison St Quincy, IL 62305 |
| County | Adams County |
| Zip Location | 39°55'41.5"N 91°20'38.2"W |
| Maidenhead | EM49hw |
| FRN | 0012771309 |
| Licensee ID/SGIN | L00977051 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 9 / 9 / IL |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | AA9CT |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0006808229 |
| Phonetic weight / Morse weight | 13 / 78 |