Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5OPP callsign genealogy
Currently held by EHRLICH, ROBERT N
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 W5OPP's current licensee, walking backwards.
- EHRLICH, ROBERT NTXgranted 2024-01-23cancelled 2024-03-01
Successor callsigns
Callsigns held now by people who previously held W5OPP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5OPP, oldest first.
- DUNLAP, HENRY A OK1987-09-29 → cancelled 1999-09-30
- EHRLICH, ROBERT N TX2024-03-01 active