Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4UYY callsign genealogy
Currently held by Brewer, Christopher
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 KF4UYY's current licensee, walking backwards.
- Brewer, ChristopherTNgranted 2025-02-20cancelled 2025-03-11
Successor callsigns
Callsigns held now by people who previously held KF4UYY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4UYY, oldest first.
- BREWER, RICHARD W TN2007-11-14 → cancelled 2019-12-05
- Brewer, Christopher TN2025-03-11 active