Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4OMI callsign genealogy
Currently held by Walker-Guzman, Delmer O
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 KP4OMI's current licensee, walking backwards.
- Walker-Guzman, Delmer OPRgranted 2014-12-18cancelled 2019-02-26
Successor callsigns
Callsigns held now by people who previously held KP4OMI.
- Walker-Guzman, Delmer OPRgranted 2019-04-26cancelled 2026-04-17