Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4BYF callsign genealogy
Currently held by MENKE, JOSEPHINE A
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 N4BYF's current licensee, walking backwards.
- Menke, Josephine ANMgranted 2008-11-18cancelled 2008-12-13
Successor callsigns
Callsigns held now by people who previously held N4BYF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4BYF, oldest first.
- PROTZ, THOMAS F VA1997-07-25 → cancelled 2002-07-05
- MENKE, JOSEPHINE A NM2008-12-13 → cancelled 2020-12-15