Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD8TRU callsign genealogy
Currently held by Helfrich, Evan 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 KD8TRU's current licensee, walking backwards.
- Helfrich, Evan CMIgranted 2012-04-13cancelled 2012-12-10
Successor callsigns
Callsigns held now by people who previously held KD8TRU.
- Helfrich, Evan CMIgranted 2022-11-16