Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1ZRO callsign genealogy
Currently held by PEDREGAL-MARTIN, CRISTOBAL
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 K1ZRO's current licensee, walking backwards.
- PEDREGAL-MARTIN, CRISTOBALCAgranted 2014-04-30cancelled 2014-05-24
Successor callsigns
Callsigns held now by people who previously held K1ZRO.
No current licensee on record previously held this callsign.