Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4APH callsign genealogy
Currently held by O BRIANT, ROBERT W
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 WA4APH's current licensee, walking backwards.
- O'Briant, Christopher CNCgranted 2018-04-20cancelled 2018-05-19
Successor callsigns
Callsigns held now by people who previously held WA4APH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4APH, oldest first.
- O BRIANT, ROBERT W NC2009-04-08 → cancelled 2018-03-25
- OBriant, Christopher C NC2018-05-19 active