Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KL7MD callsign genealogy
Currently held by HEATH, D JASPER
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 KL7MD's current licensee, walking backwards.
- Delue Jr, MichaelAKgranted 2018-05-30cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held KL7MD.
- O'Keefe, Michael DAKgranted 2018-07-27
All historical holders
Every license row we've seen with the callsign KL7MD, oldest first.
- HEATH, D JASPER AK1990-03-06 → cancelled 2002-03-07
- O'Keefe, Michael D AK2012-10-12 → cancelled 2018-07-27
- Delue Jr, Michael AK2023-03-13 active