Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4TUP callsign genealogy
Currently held by ALBERTSON, GARY M
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 KC4TUP's current licensee, walking backwards.
- Albertson, Gary MNCgranted 2024-11-22cancelled 2024-12-17
Successor callsigns
Callsigns held now by people who previously held KC4TUP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4TUP, oldest first.
- ALBERTSON, GARY M NC1990-10-30 → cancelled 2002-10-31
- Albertson, Gary M NC2024-12-17 active