Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1GSY callsign genealogy
Currently held by Henderson, Richard A
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 KB1GSY's current licensee, walking backwards.
- Fredrickson, David BNHgranted 2016-03-11cancelled 2016-04-19
Successor callsigns
Callsigns held now by people who previously held KB1GSY.
- Henderson, Richard ACTgranted 2021-05-07
All historical holders
Every license row we've seen with the callsign KB1GSY, oldest first.
- Henderson, Richard A CT2001-05-01 → cancelled 2001-05-30
- Fredrickson, David B NH2026-03-10 active