Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4I callsign genealogy
Currently held by RIVERA DIAZ, HIRAM
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 WP4I's current licensee, walking backwards.
- RODRIGUEZ-RODRIGUEZ, ANTHONYPRgranted 2009-11-04cancelled 2011-11-08
Successor callsigns
Callsigns held now by people who previously held WP4I.
- NP4DXactiveATLANTIC CONTEST CLUBPRgranted 2020-01-14
All historical holders
Every license row we've seen with the callsign WP4I, oldest first.
- RIVERA DIAZ, HIRAM PR1995-03-17 → cancelled 2003-04-26
- ATLANTIC CONTEST CLUB PR2007-03-06 → cancelled 2009-10-20
- RODRIGUEZ-RODRIGUEZ, ANTHONY PR2021-09-18 active