Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ5BJ callsign genealogy
Currently held by Schweizer, Martin
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 AJ5BJ's current licensee, walking backwards.
- Schweizer, MartinTXgranted 2025-12-19cancelled 2026-04-30
Successor callsigns
Callsigns held now by people who previously held AJ5BJ.
- Schweizer, MartinTXgranted 2026-05-29