Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GRG callsign genealogy
Currently held by Glover, Gene 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 K4GRG's current licensee, walking backwards.
- Petro, Gregory PFLgranted 2006-11-27cancelled 2006-12-16
Successor callsigns
Callsigns held now by people who previously held K4GRG.
- Glover, Gene RMEgranted 2013-06-11cancelled 2025-06-17
All historical holders
Every license row we've seen with the callsign K4GRG, oldest first.
- Glover, Gene R ME2000-09-29 → cancelled 2003-06-14
- Petro, Gregory P FL2016-09-30 active