Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9ZIP callsign genealogy
Currently held by Martin Mr, William T
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 KD9ZIP's current licensee, walking backwards.
- Martin, William TWIgranted 2022-07-07cancelled 2022-07-26
Successor callsigns
Callsigns held now by people who previously held KD9ZIP.
No current licensee on record previously held this callsign.