Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5NU callsign genealogy
Currently held by JONSSON, DOCC M
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 W5NU's current licensee, walking backwards.
- MAASS, JOHN EOKgranted 2014-05-06cancelled 2022-06-18
Successor callsigns
Callsigns held now by people who previously held W5NU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5NU, oldest first.
- PIKE, ERNEST E TX1988-01-19 → cancelled 2000-01-20
- JONSSON, DOCC M TX2010-03-24 → cancelled 2022-06-01
- MAASS, JOHN E TX2022-06-18 active