Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD0LU callsign genealogy
Currently held by CHAPPELL, JOHN R
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 AD0LU's current licensee, walking backwards.
- CHAPPELL, JOHN RCOgranted 2014-12-01cancelled 2014-12-09
Successor callsigns
Callsigns held now by people who previously held AD0LU.
- CHAPPELL, JOHN RCOgranted 2024-11-15