Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4JK callsign genealogy
Currently held by De Valle-Montanez, Jorge D
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 WP4JK's current licensee, walking backwards.
- Del Valle Montanez, Jorge DPRgranted 2015-11-17cancelled 2017-04-07
Successor callsigns
Callsigns held now by people who previously held WP4JK.
All historical holders
Every license row we've seen with the callsign WP4JK, oldest first.
- De Valle-Montanez, Jorge D PR2014-05-02 → cancelled 2015-11-17
- DEL VALLE MONTANEZ, JORGE D PR2017-04-07 → cancelled 2022-09-27