Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1BH callsign genealogy
Currently held by HOLLY, WILLIAM R
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 K1BH's current licensee, walking backwards.
- HART, ROBERT TRIgranted 2020-05-05cancelled 2026-08-25
Successor callsigns
Callsigns held now by people who previously held K1BH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1BH, oldest first.
- HOLLY, WILLIAM R ME2020-08-20 → cancelled 2024-08-06
- HART, ROBERT T RI2026-08-25 active