Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2GMC callsign genealogy
Currently held by MCKNIGHT, JOHN S
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 K2GMC's current licensee, walking backwards.
- Celenza, MichaelNYgranted 2015-06-19cancelled 2015-07-17
Successor callsigns
Callsigns held now by people who previously held K2GMC.
- MCKNIGHT, JOHN SCTgranted 2018-09-12
All historical holders
Every license row we've seen with the callsign K2GMC, oldest first.
- Celenza, Michael NY2026-07-07 active
- MCKNIGHT, JOHN S— → cancelled 1998-11-12