Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4IZP callsign genealogy
Currently held by APEX LDS Emergency Respone Team
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 KJ4IZP's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KJ4IZP.
- WN4LDSactiveAPEX LDS EMERGENCY RESPONSE TEAMNCgranted 2019-01-30