Confidence: Medium · Source: FCC ULS · As of 2026-10-24
W1RBT callsign genealogy
Currently held by TREPANIER, REAL B
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 W1RBT's current licensee, walking backwards.
- Tewksbury, Russell BWAgranted 2026-09-12cancelled 2026-10-03
Successor callsigns
Callsigns held now by people who previously held W1RBT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1RBT, oldest first.
- TREPANIER, REAL B ME2007-07-17 → cancelled 2019-10-09
- Tewksbury, Russell B WA2026-10-03 active