Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6RTF callsign genealogy
Currently held by GADE, JAMES H
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 K6RTF's current licensee, walking backwards.
- Castro, GregoryCAgranted 2021-12-13cancelled 2022-03-05
Successor callsigns
Callsigns held now by people who previously held K6RTF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6RTF, oldest first.
- GADE, JAMES H CA2005-11-21 → cancelled 2018-02-17
- Castro, Gregory CA2022-03-05 active