Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB1ABO callsign genealogy
Currently held by Chamberlin, Roger M
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 WB1ABO's current licensee, walking backwards.
- Chamberlin, Roger MNHgranted 2024-10-04cancelled 2025-01-11
Successor callsigns
Callsigns held now by people who previously held WB1ABO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB1ABO, oldest first.
- CHAMBERLIN, ROGER M VT1992-11-03 → cancelled 2004-11-04
- Chamberlin, Roger M NH2025-01-11 active