Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4GLW callsign genealogy
Currently held by WILLIAMS JR, GRADY L
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 KC4GLW's current licensee, walking backwards.
- Williams Jr, GradySCgranted 2025-04-24cancelled 2025-07-22
Successor callsigns
Callsigns held now by people who previously held KC4GLW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4GLW, oldest first.
- MONTEALEGRE JR, OSCAR R FL2011-02-15 → cancelled 2023-02-14
- WILLIAMS JR, GRADY L SC2025-07-22 active