Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4HEM callsign genealogy
Currently held by MARTINEZ, HECTOR E
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 KP4HEM's current licensee, walking backwards.
- MARTINEZ, HECTOR EPRgranted 2021-09-23cancelled 2021-10-13
Successor callsigns
Callsigns held now by people who previously held KP4HEM.
No current licensee on record previously held this callsign.