| Callsign | W5MSC |
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2017-10-24 |
| Effective Date | 2024-12-07 |
| Expire Date | 2027-10-24 |
| Cancel Date | |
| Last Action Date | 2024-12-07 |
| End Date | 2027-10-24 |
| Available Date | 2029-10-25 |
| Applicant Type | I - Individual |
| Entity Name | Christoffersen, Michael S |
| Street Address / Locality | 2423 Rhineland Ct NE Atlanta, GA 30345 |
| County | DeKalb County |
| Zip Location | 33°51'05.9"N 84°17'01.3"W |
| Maidenhead | EM73uu |
| FRN | 0022466395 |
| Licensee ID/SGIN | L01768531 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 5 / 4 / GA |
| Prev Callsign / Prev Class | KF5UDH G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | 0009618796 |
| Phonetic weight / Morse weight | 9 / 56 |