Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4ALS callsign genealogy
Currently held by CANALS, FERNANDO S
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 KP4ALS's current licensee, walking backwards.
- NIEVES-SANCHEZ, MANUEL DPRgranted 2015-04-02cancelled 2015-08-07
Successor callsigns
Callsigns held now by people who previously held KP4ALS.
- NIEVES-SANCHEZ, MANUEL DPRgranted 2026-02-03
All historical holders
Every license row we've seen with the callsign KP4ALS, oldest first.
- CANALS, FERNANDO S PR1994-01-25 → cancelled 2006-01-26
- NIEVES-SANCHEZ, MANUEL D PR2015-08-07 → cancelled 2016-02-06