Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0PU callsign genealogy
Currently held by CANTRELL, HAROLD C
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 W0PU's current licensee, walking backwards.
- Post Uiterweer, PieterCOgranted 2022-12-13cancelled 2025-01-31
Successor callsigns
Callsigns held now by people who previously held W0PU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0PU, oldest first.
- CANTRELL, HAROLD C FL2012-11-06 → cancelled 2025-01-14
- Post Uiterweer, Pieter CO2025-01-31 active