Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TDB callsign genealogy
Currently held by LEE, MARTIN E
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 K4TDB's current licensee, walking backwards.
- Boatright, Tony DFLgranted 2013-03-07cancelled 2013-08-06
Successor callsigns
Callsigns held now by people who previously held K4TDB.
- LEE, MARTIN EFLgranted 2009-10-09cancelled 2021-10-13
All historical holders
Every license row we've seen with the callsign K4TDB, oldest first.
- LEE, MARTIN E FL2008-01-12 → cancelled 2009-10-09
- Boatright, Tony D FL2023-07-29 active