Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4EM callsign genealogy
Currently held by MALAVE, ERNESTO R
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 WP4EM'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 WP4EM.
- MALAVE, ERNESTO RPRgranted 2016-11-29
All historical holders
Every license row we've seen with the callsign WP4EM, oldest first.
- De La Cruz-Butler, Luis R PR2014-11-06 active
- MALAVE, ERNESTO R— → cancelled 1998-01-06