Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6CPR callsign genealogy
Currently held by SIEBER, LOUIS M
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 W6CPR's current licensee, walking backwards.
- Rendon III, Cecil PCAgranted 2014-12-12cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held W6CPR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6CPR, oldest first.
- SIEBER, LOUIS M TX1994-04-05 → cancelled 2006-04-06
- Rendon III, Cecil P CA2019-02-20 active