Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1CBS callsign genealogy
Currently held by Campbell, Thomas 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 K1CBS's current licensee, walking backwards.
- Campbell, Thomas DNVgranted 2021-08-09cancelled 2023-05-02
Successor callsigns
Callsigns held now by people who previously held K1CBS.
- DOYLE, ROBERT DMAgranted 2000-04-25cancelled 2000-12-19
All historical holders
Every license row we've seen with the callsign K1CBS, oldest first.
- DOYLE, ROBERT D MA1999-04-09 → cancelled 2000-04-25
- DOYLE, ROBERT D MA2010-09-25 → cancelled 2022-04-12
- Campbell, Thomas D NV2023-05-02 active