Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6PTP callsign genealogy
Currently held by THOMAS, JOHN M
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 K6PTP's current licensee, walking backwards.
- Karadeema, Gerald WCAgranted 2015-11-18cancelled 2016-05-10
Successor callsigns
Callsigns held now by people who previously held K6PTP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6PTP, oldest first.
- THOMAS, JOHN M CA1989-04-11 → cancelled 2001-04-12
- Karadeema, Gerald W CA2026-03-26 active