Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0YIZ callsign genealogy
Currently held by Marsh, Jeffrey D
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 KC0YIZ'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 KC0YIZ.
- Marsh, Jeffrey DMOgranted 2026-07-01