| Callsign | KS4AM |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 2014-06-04 |
| Effective Date | 2014-06-04 |
| Expire Date | 2024-06-08 |
| Cancel Date | 2026-06-09 |
| Last Action Date | 2026-06-09 |
| End Date | 2024-06-08 |
| Available Date | 2026-07-10 |
| Applicant Type | I - Individual |
| Entity Name | Oldach, Robert D |
| Street Address / Locality | 246 Washington St Locust Grove, VA 22508 |
| County | Orange County |
| Zip Location | 38°18'47.5"N 77°47'54.5"W |
| Maidenhead | FM18ch |
| FRN | 0010855229 |
| Licensee ID/SGIN | L00857311 / 000 |
| Licensee Class | A - Advanced |
| Callsign Group | B - 2x2 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | KE4MJI P - Technician Plus |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0006312725 |
| Phonetic weight / Morse weight | 10 / 52 |