| Callsign | KM4YSI |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2026-08-27 |
| Effective Date | 2026-08-27 |
| Expire Date | 2036-11-02 |
| Cancel Date | |
| Last Action Date | 2026-08-27 |
| End Date | 2036-11-02 |
| Available Date | 2038-11-03 |
| Applicant Type | I - Individual |
| Entity Name | Siefers, William M |
| Street Address / Locality | 1828 Rawood Drive Hampton, VA 23663 |
| County | Hampton city |
| Zip Location | 37°01'56.3"N 76°18'49.1"W |
| Maidenhead | FM17ua |
| FRN | 0025963539 |
| Licensee ID/SGIN | L02057561 / 000 |
| Licensee Class | G - General |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | T - Technician |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012161332 |
| Phonetic weight / Morse weight | 13 / 66 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2016-11-02 | SYSGRT - New Systematic Call Sign Assigned |
| 2016-11-02 | LIISS - License Issued |
| 2017-03-25 | LIAUA - Administrative Update Applied |
| 2019-04-24 | LIMOD - License Modified |
| 2026-08-27 | LIREN - License Renewed |