Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KQ4ZEN callsign genealogy
Currently held by Toppenberg, Nathan
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 KQ4ZEN's current licensee, walking backwards.
- Toppenberg, Nathan STNgranted 2023-07-03cancelled 2023-08-01
Successor callsigns
Callsigns held now by people who previously held KQ4ZEN.
No current licensee on record previously held this callsign.