Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7RTG callsign genealogy
Currently held by GAMBLE, RICHARD T
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 K7RTG's current licensee, walking backwards.
- Gibson, Ryan TORgranted 2018-11-06cancelled 2018-11-27
Successor callsigns
Callsigns held now by people who previously held K7RTG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7RTG, oldest first.
- GAMBLE, RICHARD T NV2003-04-05 → cancelled 2015-04-07
- Gibson, Ryan T TX2018-11-27 active