Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NC4O callsign genealogy
Currently held by 1 A OPERATORS CLUB
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by NC4O's current licensee, walking backwards.
- Stewart, Shawn NTNgranted 2016-04-21cancelled 2021-05-07
Successor callsigns
Callsigns held now by people who previously held NC4O.
- K1JVactive1 A OPERATORS CLUBMAgranted 2019-04-16
All historical holders
Every license row we've seen with the callsign NC4O, oldest first.
- WELLS, BUREN E AL2004-06-04 → cancelled 2011-07-23
- 1 A OPERATORS CLUB MA2013-08-13 → cancelled 2019-04-16
- Stewart, Shawn N TN2021-05-07 active