Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7MDH callsign genealogy
Currently held by HASLIP, MICHAEL 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 W7MDH's current licensee, walking backwards.
- HASLIP, MICHAEL DWAgranted 2007-01-03cancelled 2007-02-13
Successor callsigns
Callsigns held now by people who previously held W7MDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MDH, oldest first.
- STEWART, WALTER A CA1996-04-18 → cancelled 2000-03-09
- HASLIP, MICHAEL D WA2017-03-22 active