Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4BY callsign genealogy
Currently held by Dahm, Rene
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 AJ4BY's current licensee, walking backwards.
- Dahm, ReneFLgranted 2007-04-30cancelled 2007-09-15
Successor callsigns
Callsigns held now by people who previously held AJ4BY.
- Dahm, ReneNYgranted 2017-07-27