Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF5DA callsign genealogy
Currently held by WHISTLER JR, JOHN K
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 AF5DA's current licensee, walking backwards.
- WHISTLER JR, JOHN KTXgranted 2012-03-01cancelled 2012-03-26
Successor callsigns
Callsigns held now by people who previously held AF5DA.
- whistler 659, john KTXgranted 2012-07-13cancelled 2024-07-16