Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0BOY callsign genealogy
Currently held by JOHNSON, GLEN W
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 KA0BOY's current licensee, walking backwards.
- Gier, Isaac CNEgranted 2020-06-23cancelled 2020-09-29
Successor callsigns
Callsigns held now by people who previously held KA0BOY.
- Gier, Isaac CNEgranted 2021-10-30
All historical holders
Every license row we've seen with the callsign KA0BOY, oldest first.
- JOHNSON, GLEN W MO1989-01-17 → cancelled 2001-01-18
- Gier, Isaac C NE2020-09-29 → cancelled 2021-10-30