Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4RBT callsign genealogy
Currently held by Watson, Robert 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 KM4RBT's current licensee, walking backwards.
- Watson, Robert GGAgranted 2016-01-20cancelled 2016-02-09
Successor callsigns
Callsigns held now by people who previously held KM4RBT.
No current licensee on record previously held this callsign.