Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4TZD callsign genealogy
Currently held by MERWIN, ROBERT B C
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 KC4TZD's current licensee, walking backwards.
- KC4GJWno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KC4TZD.
No current licensee on record previously held this callsign.