Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9MRF callsign genealogy
Currently held by Fehrenbach, Michael R
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 W9MRF's current licensee, walking backwards.
- Fehrenbach, Michael RWIgranted 2012-03-05cancelled 2012-03-30
Successor callsigns
Callsigns held now by people who previously held W9MRF.
No current licensee on record previously held this callsign.