Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4MGM callsign genealogy
Currently held by RICHARDSON, PHIL H
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 KF4MGM's current licensee, walking backwards.
- Richardson, Phillip HTXgranted 2007-06-08cancelled 2010-01-16
Successor callsigns
Callsigns held now by people who previously held KF4MGM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4MGM, oldest first.
- VANATTA, ERIC A TN1996-09-26 → cancelled 2008-09-27
- RICHARDSON, PHIL H TX2019-12-11 active