Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DM callsign genealogy
Currently held by KEIGLEY, JOHN K
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 W7DM's current licensee, walking backwards.
- Frazier, Jason LWAgranted 2017-05-08cancelled 2017-07-21
Successor callsigns
Callsigns held now by people who previously held W7DM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DM, oldest first.
- KEIGLEY, JOHN K WA2008-06-18 → cancelled 2015-07-01
- Frazier, Jason L WA2017-07-21 active