Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ6FU callsign genealogy
Currently held by Johnston, Mark 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 AJ6FU's current licensee, walking backwards.
- Johnston, Mark ECAgranted 2018-06-20cancelled 2018-10-09
Successor callsigns
Callsigns held now by people who previously held AJ6FU.
- Johnston, Mark ECAgranted 2018-10-30