Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JPC callsign genealogy
Currently held by Combs, John P
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 K9JPC's current licensee, walking backwards.
- Costella, John PCAgranted 2016-04-25cancelled 2016-05-13
Successor callsigns
Callsigns held now by people who previously held K9JPC.
- Combs, John PFLgranted 2008-04-11cancelled 2020-04-14
All historical holders
Every license row we've seen with the callsign K9JPC, oldest first.
- Combs, John P FL2002-04-10 → cancelled 2008-04-11
- Costella, John P DC2026-02-14 active