Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7ULO callsign genealogy
Currently held by JOHNSON JR, RALPH V
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 KC7ULO'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 KC7ULO.
- JOHNSON JR, RALPH VHIgranted 2006-12-06cancelled 2011-04-19