Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MPM callsign genealogy
Currently held by Macklin, Ronald T
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 K4MPM's current licensee, walking backwards.
- Macklin, Ronald TGAgranted 2021-02-16cancelled 2021-03-16
Successor callsigns
Callsigns held now by people who previously held K4MPM.
No current licensee on record previously held this callsign.