Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4BTO callsign genealogy
Currently held by EDWARDS JR, ROBERT T
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 W4BTO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4BTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4BTO, oldest first.
- STITZEL, HARRY B FL1997-12-18 → cancelled 2009-12-19
- EDWARDS JR, ROBERT T FL2022-12-06 active