Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3BT callsign genealogy
Currently held by TRAUTMAN, ROBERT
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 K3BT's current licensee, walking backwards.
- TRAUTMAN, ROBERTMDgranted 2020-10-28cancelled 2021-01-26
Successor callsigns
Callsigns held now by people who previously held K3BT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3BT, oldest first.
- WYCKOFF, JAMES M MD2018-07-24 → cancelled 2019-01-07
- TRAUTMAN, ROBERT MD2021-01-26 active