Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4MUF callsign genealogy
Currently held by MANSBERG, HYMAN P
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 W4MUF's current licensee, walking backwards.
- Moser, Jimmy LTNgranted 2018-04-30cancelled 2020-03-20
Successor callsigns
Callsigns held now by people who previously held W4MUF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MUF, oldest first.
- MANSBERG, HYMAN P NC2000-03-07 → cancelled 2005-08-18
- Moser, Jimmy L TN2020-03-20 active