Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW7DTM callsign genealogy
Currently held by Margrave, David T
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 KW7DTM's current licensee, walking backwards.
- Margrave, David TWAgranted 2015-09-24cancelled 2015-10-14
Successor callsigns
Callsigns held now by people who previously held KW7DTM.
No current licensee on record previously held this callsign.