| Callsign | K4RB |
|---|---|
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2026-08-15 |
| Effective Date | 2026-08-15 |
| Expire Date | 2036-11-04 |
| Cancel Date | |
| Last Action Date | 2026-08-15 |
| End Date | 2036-11-04 |
| Available Date | 2038-11-05 |
| Applicant Type | I - Individual |
| Entity Name | BLUMBERG, ROBERT G |
| Street Address / Locality | 1667 Freda Lane Cardiff by the Sea, CA 92007 |
| County | San Diego County |
| Zip Location | 33°01'23.0"N 117°16'32.1"W |
| Maidenhead | DM13ia |
| FRN | 0003145133 |
| Licensee ID/SGIN | L00134944 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 1x2 |
| ULS/Geo Region | 4 / 6 / CA |
| Prev Callsign / Prev Class | AA4U |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012151693 |
| Phonetic weight / Morse weight | 9 / 48 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2002-06-25 | LIMOD - License Modified |
| 2006-09-08 | LIREN - License Renewed |
| 2012-12-04 | LIAUA - Administrative Update Applied |
| 2016-08-16 | LIREN - License Renewed |
| 2024-07-10 | LIAUA - Administrative Update Applied |
| 2026-08-15 | LIREN - License Renewed |