Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4OSP callsign genealogy
Currently held by Soler, Osvaldo L
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 KP4OSP's current licensee, walking backwards.
- Soler-Pastrana, Osvaldo LPRgranted 2014-06-03cancelled 2014-08-01
Successor callsigns
Callsigns held now by people who previously held KP4OSP.
- Soler, Osvaldo LPRgranted 2021-08-10