Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4GRU callsign genealogy
Currently held by Setzer, Edwin 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 KN4GRU'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 KN4GRU.
- Setzer, Edwin CFLgranted 2017-11-07