Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW4YMZ callsign genealogy
Currently held by Herold, Gustavus 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 KW4YMZ's current licensee, walking backwards.
- Herold, Gustavus AVAgranted 2017-08-31cancelled 2017-09-26
Successor callsigns
Callsigns held now by people who previously held KW4YMZ.
No current licensee on record previously held this callsign.