Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MKP callsign genealogy
Currently held by Porter, Michael K
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 K4MKP's current licensee, walking backwards.
- Pratt, Michael KNCgranted 2024-12-24cancelled 2025-01-14
Successor callsigns
Callsigns held now by people who previously held K4MKP.
- Porter, Michael KMIgranted 2020-07-31
All historical holders
Every license row we've seen with the callsign K4MKP, oldest first.
- Porter, Michael K GA2018-07-13 → cancelled 2020-07-31
- Pratt, Michael K NC2025-01-14 active