Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MFO callsign genealogy
Currently held by Olinger Jr, Milford F
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 K4MFO's current licensee, walking backwards.
- Olinger Jr, Milford FALgranted 2004-10-19cancelled 2004-11-10
Successor callsigns
Callsigns held now by people who previously held K4MFO.
No current licensee on record previously held this callsign.