Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP3FE callsign genealogy
Currently held by CABALLERO MARTINEZ, MANUEL I
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 NP3FE's current licensee, walking backwards.
- Caballero-Martinez, Manuel IPRgranted 2014-07-07cancelled 2017-10-31
Successor callsigns
Callsigns held now by people who previously held NP3FE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP3FE, oldest first.
- CABALLERO, MANUEL I PR1996-09-30 → cancelled 2008-08-26
- CABALLERO MARTINEZ, MANUEL I PR2017-10-31 active