Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4I callsign genealogy
Currently held by JOHNSON JR, MACK C
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 AK4I's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AK4I.
- JOHNSON JR, MACK CGAgranted 2015-02-04cancelled 2018-12-14
All historical holders
Every license row we've seen with the callsign AK4I, oldest first.
- JOHNSON JR, MACK C GA1996-07-24 → cancelled 2005-03-18
- STUDER, JAMES L TN2017-04-14 active