Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA5OSB callsign genealogy
Currently held by James, Christopher H
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 WA5OSB's current licensee, walking backwards.
- James, Christopher HORgranted 2024-11-01cancelled 2026-05-19
Successor callsigns
Callsigns held now by people who previously held WA5OSB.
No current licensee on record previously held this callsign.