Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8TMD callsign genealogy
Currently held by McMorrow, David W
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 K8TMD's current licensee, walking backwards.
- XIAO, QINGWAgranted 2025-03-28cancelled 2025-05-16
Successor callsigns
Callsigns held now by people who previously held K8TMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8TMD, oldest first.
- McMorrow, David W MI2011-04-30 → cancelled 2023-05-02
- XIAO, QING WA2025-05-16 active