Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP3MM callsign genealogy
Currently held by MARTINEZ-DELGADO, MANUEL A
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 WP3MM's current licensee, walking backwards.
- Martinez-Delgado, Manuel APRgranted 2017-11-09cancelled 2018-05-11
Successor callsigns
Callsigns held now by people who previously held WP3MM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP3MM, oldest first.
- Nazario Ramirez, Robert R PR2001-09-26 → cancelled 2013-09-27
- MARTINEZ-DELGADO, MANUEL A PR2018-05-11 active