Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9CKV callsign genealogy
Currently held by Schrum, John A
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 KC9CKV's current licensee, walking backwards.
- Schrum, John AILgranted 1999-10-09cancelled 2002-09-19
Successor callsigns
Callsigns held now by people who previously held KC9CKV.
- Schrum, John AILgranted 2019-09-20