| Callsign | W4SDR |
| Radio Service | HV - Vanity |
| License Status | C - Canceled |
| Grant Date | 1998-11-18 |
| Effective Date | 1998-11-18 |
| Expire Date | 2008-11-18 |
| Cancel Date | 2008-11-21 |
| Last Action Date | 2008-11-21 |
| End Date | 2008-11-21 |
| Available Date | 2010-11-22 |
| Applicant Type | B - Amateur Club |
| Entity Name | SEMI DEDICATED RADIO CONTEST CLUB |
| Street Address / Locality | PO Box 1269 DAHLONEGA, GA 30533 |
| County | Lumpkin County |
| Zip Location | 34°33'40.7"N 84°00'54.3"W |
| Maidenhead | EM74xn |
| FRN | 0001518638 |
| Licensee ID/SGIN | L00181954 / 000 |
| Licensee Class | |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / GA |
| Prev Callsign / Prev Class | KG4AMT |
| Next Callsign | K4DTX |
| Trustee Callsign / Trustee Name | W4ZST LEAR, ROBERT S |
| Vanity Type | F - By List (Club) |
| ULS File Number | 9810305991 |
| Phonetic weight / Morse weight | 12 / 54 |