Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4RQ callsign genealogy
Currently held by WILLAMSON, KEITH 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 KW4RQ's current licensee, walking backwards.
- WILLAMSON, KEITH MFLgranted 2025-08-19cancelled 2025-09-06
Successor callsigns
Callsigns held now by people who previously held KW4RQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KW4RQ, oldest first.
- WILLIAMSON, KEITH M FL2011-10-31 → cancelled 2023-11-28
- WILLAMSON, KEITH M FL2025-09-06 active