Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC6GPW callsign genealogy
Currently held by Porter, Jonathan S
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 KC6GPW's current licensee, walking backwards.
- Porter, Jonathan SCAgranted 2007-06-26cancelled 2007-07-17
Successor callsigns
Callsigns held now by people who previously held KC6GPW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC6GPW, oldest first.
- STEBINGER, MICHAEL S CA1989-10-31 → cancelled 2002-02-28
- Porter, Jonathan S CA2017-08-17 active