Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1ROL callsign genealogy
Currently held by Crocker, Derek S
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 K1ROL's current licensee, walking backwards.
- Crocker, Derek SCTgranted 2010-12-02cancelled 2011-01-21
Successor callsigns
Callsigns held now by people who previously held K1ROL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1ROL, oldest first.
- GATZIMOS, GEORGE D MA1998-03-11 → cancelled 2010-03-12
- Crocker, Derek S RI2021-01-08 active