Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7TMM callsign genealogy
Currently held by MARSHALL, CHARLES M
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 W7TMM's current licensee, walking backwards.
- Standiford, Deanna LWAgranted 2014-02-21cancelled 2016-11-08
Successor callsigns
Callsigns held now by people who previously held W7TMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7TMM, oldest first.
- MARSHALL, CHARLES M WA2003-12-03 → cancelled 2016-03-02
- Standiford, Deanna L WA2016-11-08 active