Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KAT callsign genealogy
Currently held by MASON, RONALD L
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 W4KAT's current licensee, walking backwards.
- CERAR, JAMES TFLgranted 2000-09-02cancelled 2010-06-25
- KC1BQno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W4KAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4KAT, oldest first.
- MASON, RONALD L TN1998-05-12 → cancelled 2010-05-13
- CERAR, JAMES T FL2020-04-06 active