| Callsign | AI6RD |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2026-05-13 |
| Effective Date | 2026-05-15 |
| Expire Date | 2036-07-13 |
| Cancel Date | |
| Last Action Date | 2026-05-15 |
| End Date | 2036-07-13 |
| Available Date | 2038-07-14 |
| Applicant Type | I - Individual |
| Entity Name | HELFMAN, MARC D |
| Street Address / Locality | 8852 BROWN AVE KENWOOD, CA 95452 |
| County | Sonoma County |
| Zip Location | 38°25'31.9"N 122°32'06.8"W |
| Maidenhead | CM88rk |
| FRN | 0025718115 |
| Licensee ID/SGIN | L02038684 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 2x2 |
| ULS/Geo Region | 6 / 6 / CA |
| Prev Callsign / Prev Class | |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012036283 |
| Phonetic weight / Morse weight | 11 / 48 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2016-07-13 | SYSGRT - New Systematic Call Sign Assigned |
| 2016-07-13 | LIISS - License Issued |
| 2026-05-13 | LIREN - License Renewed |
| 2026-05-15 | LIAUA - Administrative Update Applied |