Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5TXH callsign genealogy
Currently held by Ferreira, Benjamin R
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 KB5TXH's current licensee, walking backwards.
- FERREIRA, BENJAMIN RTXgranted 2020-08-17cancelled 2020-09-04
Successor callsigns
Callsigns held now by people who previously held KB5TXH.
- Ferreira, Benjamin RTXgranted 2020-11-14
All historical holders
Every license row we've seen with the callsign KB5TXH, oldest first.
- FERREIRA, BENJAMIN R TX1992-07-14 → cancelled 2004-07-15
- Ferreira, Benjamin R TX2020-09-04 → cancelled 2020-11-14