Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1RS callsign genealogy
Currently held by Sawyer, Robert W
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 KB1RS's current licensee, walking backwards.
- Sawyer, Robert WCTgranted 2014-11-21cancelled 2020-06-23
Successor callsigns
Callsigns held now by people who previously held KB1RS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB1RS, oldest first.
- LEAVITT, RICHARD C MA1995-03-20 → cancelled 2007-03-21
- Sawyer, Robert W CT2020-06-23 active