Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GSR callsign genealogy
Currently held by GRAMMER, BILL
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 K4GSR's current licensee, walking backwards.
- KERR, DAVID LGAgranted 2017-03-15cancelled 2026-05-05
Successor callsigns
Callsigns held now by people who previously held K4GSR.
- GRAMMER, BILLSCgranted 2021-11-05
All historical holders
Every license row we've seen with the callsign K4GSR, oldest first.
- WEISS, SANFORD D FL1999-05-03 → cancelled 2011-05-04
- GRAMMER, BILL SC2011-09-13 → cancelled 2012-01-31
- KERR, DAVID L GA2026-05-05 active