Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AH6UL callsign genealogy
Currently held by Cook, Mark D M
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 AH6UL's current licensee, walking backwards.
- Cook, Mark DMNMgranted 2018-08-21
Successor callsigns
Callsigns held now by people who previously held AH6UL.
- Cook, Mark DMNMgranted 2018-08-21