Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB3ZVX callsign genealogy
Currently held by Mummert, John O
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 KB3ZVX'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 KB3ZVX.
- Mummert, John OPAgranted 2017-05-12