Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4CAT callsign genealogy
Currently held by Barbosa, Charlston 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 KM4CAT's current licensee, walking backwards.
- Penalbert Pagan, LynetteFLgranted 2021-10-12cancelled 2021-10-30
Successor callsigns
Callsigns held now by people who previously held KM4CAT.
- Barbosa, Charlston LGAgranted 2026-05-09
All historical holders
Every license row we've seen with the callsign KM4CAT, oldest first.
- Barbosa, Charlston L GA2014-06-09 → cancelled 2014-06-28
- Penalbert Pagan, Lynnette FL2021-10-30 active