Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MLB callsign genealogy
Currently held by RYBICKI, GEORGE 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 K4MLB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4MLB.
No current licensee on record previously held this callsign.