Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4HWM callsign genealogy
Currently held by Wollerman, Jon C
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 W4HWM's current licensee, walking backwards.
- Wollerman, Jon CFLgranted 2003-12-04cancelled 2010-01-15
Successor callsigns
Callsigns held now by people who previously held W4HWM.
No current licensee on record previously held this callsign.