Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4BIX callsign genealogy
Currently held by Sisco, John M
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 KA4BIX's current licensee, walking backwards.
- Sisco, John MFLgranted 2008-01-15cancelled 2008-02-05
Successor callsigns
Callsigns held now by people who previously held KA4BIX.
No current licensee on record previously held this callsign.