Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4KRG callsign genealogy
Currently held by Smith, John 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 K4KRG's current licensee, walking backwards.
- Goldman, RyanFLgranted 2020-12-31cancelled 2021-02-23
Successor callsigns
Callsigns held now by people who previously held K4KRG.
- Smith, John TSCgranted 2018-07-17
All historical holders
Every license row we've seen with the callsign K4KRG, oldest first.
- Smith, John T SC2018-05-05 → cancelled 2018-07-17
- Goldman, Ryan FL2021-02-23 active