Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3CX callsign genealogy
Currently held by KAUKER II, JOHN J
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 K3CX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K3CX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3CX, oldest first.
- LEISE, SOL MD1987-12-08 → cancelled 1999-12-09
- KAUKER II, JOHN J PA2020-03-04 active