Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TMB callsign genealogy
Currently held by Besch, Thomas M
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 W4TMB's current licensee, walking backwards.
- Bartenope Jr, Anthony MFLgranted 2014-11-12cancelled 2014-12-30
Successor callsigns
Callsigns held now by people who previously held W4TMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TMB, oldest first.
- Besch, Thomas M MD2002-03-29 → cancelled 2014-04-01
- Bartenope Jr, Anthony M TX2024-12-31 active