Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1DWO callsign genealogy
Currently held by Spence, Thomas G
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 KB1DWO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB1DWO.
- Spence, Thomas GMDgranted 2025-12-23