Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4MSP callsign genealogy
Currently held by VAZQUEZ SR, LUIS J
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 KJ4MSP'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 KJ4MSP.
- VAZQUEZ SR, LUIS JGAgranted 2021-10-01