Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1GCT callsign genealogy
Currently held by EIRICH, 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 KB1GCT's current licensee, walking backwards.
- EIRICH, MATTHEWCTgranted 2011-04-18cancelled 2014-07-18
Successor callsigns
Callsigns held now by people who previously held KB1GCT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB1GCT, oldest first.
- Tarbox, Raymond J RI2000-12-27 → cancelled 2012-12-28
- EIRICH, MATTHEW CT2024-06-01 active