Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1GW callsign genealogy
Currently held by CASHMAN, MATTHEW
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 KB1GW's current licensee, walking backwards.
- CASHMAN, MATTHEWMAgranted 2020-09-24cancelled 2021-02-13
Successor callsigns
Callsigns held now by people who previously held KB1GW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB1GW, oldest first.
- Swanson, Glenn P CT2003-05-29 → cancelled 2008-08-01
- CASHMAN, MATTHEW MA2021-02-13 active