Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3ML callsign genealogy
Currently held by Johnston, Ronald J
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 AB3ML's current licensee, walking backwards.
- Johnston, Ronald JPAgranted 2010-09-21cancelled 2010-12-21
Successor callsigns
Callsigns held now by people who previously held AB3ML.
No current licensee on record previously held this callsign.