Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF1W callsign genealogy
Currently held by O BRIEN, FRANCIS J
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 WF1W's current licensee, walking backwards.
- Chavis, Chris MINgranted 2010-12-14cancelled 2018-11-20
Successor callsigns
Callsigns held now by people who previously held WF1W.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WF1W, oldest first.
- O BRIEN, FRANCIS J NH2010-03-08 → cancelled 2016-11-01
- Chavis, Chris M IN2018-11-20 active