Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT7DOC callsign genealogy
Currently held by Underwood, Damon 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 KT7DOC's current licensee, walking backwards.
- Underwood, Damon TORgranted 2023-10-20cancelled 2023-11-07
Successor callsigns
Callsigns held now by people who previously held KT7DOC.
- Green, David MORgranted 2021-06-15
All historical holders
Every license row we've seen with the callsign KT7DOC, oldest first.
- Green, David M OR2019-08-27 → cancelled 2021-06-15
- Underwood, Damon T OR2023-11-07 active