Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD9FMB callsign genealogy
Currently held by BOCK, FREDERIC M
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 WD9FMB's current licensee, walking backwards.
- BOCK, FREDERIC Mcancelled 1998-10-20
Successor callsigns
Callsigns held now by people who previously held WD9FMB.
No current licensee on record previously held this callsign.