Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NZ5F callsign genealogy
Currently held by HEIMBOLD, KEITH W
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 NZ5F's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NZ5F.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NZ5F, oldest first.
- MAXCEY, BOB R TX2005-02-22 → cancelled 2017-05-20
- HEIMBOLD, KEITH W TX2017-06-09 active