Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4DMR callsign genealogy
Currently held by MONTALVO RIVERA, DELIRIS
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 WP4DMR's current licensee, walking backwards.
- MONTALVO RIVERA, DELIRISPRgranted 2020-02-06cancelled 2020-03-03
Successor callsigns
Callsigns held now by people who previously held WP4DMR.
No current licensee on record previously held this callsign.