Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0CLB callsign genealogy
Currently held by RYAN, MARK 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 KC0CLB'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 KC0CLB.
- RYAN, MARK SNEgranted 1999-06-03cancelled 2000-04-25