Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NU4Q callsign genealogy
Currently held by Kallstrom, Michael J
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 NU4Q's current licensee, walking backwards.
- Kallstrom, Michael JKYgranted 2001-06-05cancelled 2002-05-28
Successor callsigns
Callsigns held now by people who previously held NU4Q.
- LUCHT, CLIFTON ANCgranted 2019-05-08
All historical holders
Every license row we've seen with the callsign NU4Q, oldest first.
- Kallstrom, Michael J NC2022-07-28 active
- —— → cancelled 1999-08-04