Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RBL callsign genealogy
Currently held by Gardner III, Marshall C
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 K4RBL's current licensee, walking backwards.
- Gardner III, Marshall CSCgranted 2003-02-07cancelled 2003-06-06
Successor callsigns
Callsigns held now by people who previously held K4RBL.
No current licensee on record previously held this callsign.