Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NZ4K callsign genealogy
Currently held by Lundis, 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 NZ4K's current licensee, walking backwards.
- Lundis, Michael JTNgranted 2022-06-22cancelled 2022-07-15
Successor callsigns
Callsigns held now by people who previously held NZ4K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NZ4K, oldest first.
- Williams Jr, Michael P FL2010-04-20 → cancelled 2022-06-25
- Lundis, Michael J TN2022-07-15 active