Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU4Q callsign genealogy
Currently held by GUFFEY, KEITH E
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 KU4Q's current licensee, walking backwards.
- GUFFEY, KEITH ESCgranted 2000-02-23cancelled 2002-03-29
Successor callsigns
Callsigns held now by people who previously held KU4Q.
- K7QXcancelledLAKE WORTH REPEATER GROUP INCFLgranted 1999-02-10cancelled 1999-07-28
All historical holders
Every license row we've seen with the callsign KU4Q, oldest first.
- GUFFEY, KEITH E SC2022-01-20 active
- —— → cancelled 1999-02-10