| Callsign | W4RMT |
| Radio Service | HV - Vanity |
| License Status | E - Expired |
| Grant Date | 2011-07-06 |
| Effective Date | 2011-07-06 |
| Expire Date | 2021-08-07 |
| Cancel Date | 2023-08-08 |
| Last Action Date | 2023-08-08 |
| End Date | 2021-08-07 |
| Available Date | 2023-09-08 |
| Applicant Type | B - Amateur Club |
| Entity Name | Castalia Island DX Association |
| Street Address / Locality | 1006 REEDY CREEK RD CARY, NC 27513 |
| County | Wake County |
| Zip Location | 35°48'07.1"N 78°48'09.3"W |
| Maidenhead | FM05ot |
| FRN | 0005103239 |
| Licensee ID/SGIN | L00379542 / 000 |
| Licensee Class | |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / NC |
| Prev Callsign / Prev Class | KG4OMC |
| Next Callsign | |
| Trustee Callsign / Trustee Name | WA4TLI CARTER, PRESTON A |
| Vanity Type | |
| ULS File Number | 0001507541 |
| Phonetic weight / Morse weight | 10 / 52 |