Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA9DMM callsign genealogy
Currently held by Stumm, David R
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 WA9DMM's current licensee, walking backwards.
- Stumm, David RINgranted 2024-10-30cancelled 2024-11-26
Successor callsigns
Callsigns held now by people who previously held WA9DMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA9DMM, oldest first.
- LOWE, JERRY W KY2007-01-25 → cancelled 2019-04-19
- Stumm, David R IN2024-11-26 active