| Callsign | K4NCS |
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2018-09-11 |
| Effective Date | 2018-09-19 |
| Expire Date | 2028-09-11 |
| Cancel Date | |
| Last Action Date | 2024-03-18 |
| End Date | 2028-09-11 |
| Available Date | 2030-09-12 |
| Applicant Type | B - Amateur Club |
| Entity Name | NATIONAL COMMUNICATIONS SYSTEM ARC |
| Street Address / Locality | DHS NPPD/CS&C/NCCIC/NC MS-0645 Arlington, VA 205980645 |
| County | Loudoun |
| Zip Location | 38°59'25.4"N 77°26'51.7"W |
| Maidenhead | FM18gx |
| FRN | 0009793712 |
| Licensee ID/SGIN | L00761098 / 000 |
| Licensee Class | |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | KE4ZAZ |
| Next Callsign | |
| Trustee Callsign / Trustee Name | KK4RXM Briggs, Kevin G |
| Vanity Type | F - By List (Club) |
| ULS File Number | 0008373748 |
| Phonetic weight / Morse weight | 12 / 56 |