Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4TKP callsign genealogy
Currently held by Porch III, Phillip 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 KO4TKP's current licensee, walking backwards.
- Porch III, Phillip PTNgranted 2020-07-21cancelled 2021-07-02
Successor callsigns
Callsigns held now by people who previously held KO4TKP.
No current licensee on record previously held this callsign.