Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9TDW callsign genealogy
Currently held by Whitmer, Todd D
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 K9TDW's current licensee, walking backwards.
- Whitmer, Todd DILgranted 2020-06-26cancelled 2020-07-17
Successor callsigns
Callsigns held now by people who previously held K9TDW.
No current licensee on record previously held this callsign.