| Callsign | KU4M |
|---|---|
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2026-10-24 |
| Effective Date | 2026-10-24 |
| Expire Date | 2036-12-18 |
| Cancel Date | |
| Last Action Date | 2026-10-24 |
| End Date | 2036-12-18 |
| Available Date | 2038-12-19 |
| Applicant Type | I - Individual |
| Entity Name | ROSENBERG, MARK B |
| Street Address / Locality | 2511 Summerson Road, PO Box 21209 Baltimore, MD 21209 |
| County | Baltimore County |
| Zip Location | 39°22'23.5"N 76°40'12.0"W |
| Maidenhead | FM19pi |
| FRN | 0006885545 |
| Licensee ID/SGIN | L01102664 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 2x1 |
| ULS/Geo Region | 4 / 3 / MD |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | 0002760920 |
| Phonetic weight / Morse weight | 8 / 46 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2006-01-05 | ESCFRN |
| 2006-01-06 | LIAUA - Administrative Update Applied |
| 2006-09-22 | LIREN - License Renewed |
| 2015-03-20 | LIAUA - Administrative Update Applied |
| 2016-09-20 | LIREN - License Renewed |
| 2026-10-24 | LIREN - License Renewed |