Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4WAF callsign genealogy
Currently held by Hartwig, John 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 W4WAF's current licensee, walking backwards.
- Hartwig, John MALgranted 2026-04-01cancelled 2026-04-21
Successor callsigns
Callsigns held now by people who previously held W4WAF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4WAF, oldest first.
- FREEMAN, C WARNER FL1998-04-16 → cancelled 2010-04-17
- Hartwig, John M AL2026-04-21 active