Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RGF callsign genealogy
Currently held by Fritz, Robert G
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 K4RGF's current licensee, walking backwards.
- Fritz, Robert GFLgranted 2010-03-24cancelled 2010-05-01
Successor callsigns
Callsigns held now by people who previously held K4RGF.
No current licensee on record previously held this callsign.