Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4HB callsign genealogy
Currently held by MARTIN, PRESTON B
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 KZ4HB's current licensee, walking backwards.
- MARTIN, PRESTON BVAgranted 2016-05-03cancelled 2024-04-30
Successor callsigns
Callsigns held now by people who previously held KZ4HB.
No current licensee on record previously held this callsign.