Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC3BY callsign genealogy
Currently held by Richline, Derek J
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 AC3BY's current licensee, walking backwards.
- Richline, Derek JPAgranted 2017-10-27cancelled 2017-11-14
Successor callsigns
Callsigns held now by people who previously held AC3BY.
- Richline, DakotaFLgranted 2017-12-05