Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1BIL callsign genealogy
Currently held by Whelihan, William 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 K1BIL's current licensee, walking backwards.
- Whelihan, William MRIgranted 2003-03-20cancelled 2003-10-24
Successor callsigns
Callsigns held now by people who previously held K1BIL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1BIL, oldest first.
- GRAHAM, VIOLET M MA1988-09-27 → cancelled 2000-09-28
- Whelihan, William M MA2023-09-19 active