Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GRT callsign genealogy
Currently held by TYSON JR, GEORGE R
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 K4GRT's current licensee, walking backwards.
- TYSON JR, GEORGE RFLgranted 2009-11-23cancelled 2013-09-24
Successor callsigns
Callsigns held now by people who previously held K4GRT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GRT, oldest first.
- WANTZ, SHERMAN P FL1996-02-16 → cancelled 2008-02-19
- TYSON JR, GEORGE R FL2023-08-24 active