Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF6DO callsign genealogy
Currently held by Hardy, Mark D
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 AF6DO's current licensee, walking backwards.
- Hardy, Mark DCAgranted 2001-06-01cancelled 2007-07-24
Successor callsigns
Callsigns held now by people who previously held AF6DO.
- Hardy, Mark DCAgranted 2018-10-10