Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8OIH callsign genealogy
Currently held by CASTO, DAVID 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 W8OIH's current licensee, walking backwards.
- CASTO, DAVID LOHgranted 1995-09-29cancelled 1999-11-10
Successor callsigns
Callsigns held now by people who previously held W8OIH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8OIH, oldest first.
- CASTO, LUCIEN H OH1988-09-06 → cancelled 1995-07-10
- CASTO, DAVID L AZ2019-10-04 active