Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3HF callsign genealogy
Currently held by Mathis, Craig
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 KC3HF's current licensee, walking backwards.
- Mathis, CraigPAgranted 2025-04-15cancelled 2025-05-28
Successor callsigns
Callsigns held now by people who previously held KC3HF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC3HF, oldest first.
- GRACE, DAVID C PA2011-02-07 → cancelled 2023-02-08
- Mathis, Craig PA2025-05-28 active