Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WN9OPD callsign genealogy
Currently held by JOHNSTON, DAVID P
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 WN9OPD's current licensee, walking backwards.
- JOHNSTON, DAVID PILgranted 2019-09-06cancelled 2022-05-03
Successor callsigns
Callsigns held now by people who previously held WN9OPD.
No current licensee on record previously held this callsign.