Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3TMB callsign genealogy
Currently held by Brendlinger, 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 N3TMB's current licensee, walking backwards.
- BIANCHI, TAMMY MMDgranted 2022-09-24cancelled 2023-08-01
Successor callsigns
Callsigns held now by people who previously held N3TMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3TMB, oldest first.
- FOUST, JAMES B PA1994-10-05 → cancelled 2006-10-06
- Brendlinger, Thomas M RI2009-06-05 → cancelled 2021-10-13
- BIANCHI, TAMMY M MD2023-08-01 active