Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7XB callsign genealogy
Currently held by SEMERAU, RYAN
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 AD7XB's current licensee, walking backwards.
- SEMERAU, RYANUTgranted 2008-10-01cancelled 2008-11-04
Successor callsigns
Callsigns held now by people who previously held AD7XB.
No current licensee on record previously held this callsign.