Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4ZM callsign genealogy
Currently held by MARSH, RAYMOND M
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 KU4ZM's current licensee, walking backwards.
- MARSH, RAYMOND Mcancelled 1999-04-28
Successor callsigns
Callsigns held now by people who previously held KU4ZM.
- Marsh, Raymond MVAgranted 1999-04-28cancelled 2000-10-31