Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4BYL callsign genealogy
Currently held by RITCHEY JR, ROBERT L
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 KK4BYL's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK4BYL.
- RITCHEY JR, ROBERT LSCgranted 2021-09-21