Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9AMC callsign genealogy
Currently held by ARMISTEAD, THOMAS D
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 KB9AMC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KB9AMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9AMC, oldest first.
- ARMISTEAD, THOMAS D IN1988-12-27 → cancelled 2000-12-28
- Clark, Anthony M IL2020-05-05 active