Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AK4SY callsign genealogy
Currently held by CALLEN, LON E
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 AK4SY's current licensee, walking backwards.
- CALLEN, LON EVAgranted 2010-08-16cancelled 2012-04-16
Successor callsigns
Callsigns held now by people who previously held AK4SY.
No current licensee on record previously held this callsign.