Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1BRF callsign genealogy
Currently held by QUINNEBAUG VALLEY RADIO CLUB
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 W1BRF's current licensee, walking backwards.
- KNOWLTON, KEITH LCTgranted 2004-03-31cancelled 2010-01-20
Successor callsigns
Callsigns held now by people who previously held W1BRF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1BRF, oldest first.
- QUINNEBAUG VALLEY RADIO CLUB CT1994-06-15 → cancelled 2006-06-16
- KNOWLTON, KEITH L CT2019-10-25 active