Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4MX callsign genealogy
Currently held by LIN, SI HONG
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 AF4MX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AF4MX.
- LIN, SI HONGVAgranted 1999-02-23cancelled 2011-02-24