Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5TBN callsign genealogy
Currently held by MONTGOMERY, HAROLD L
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 K5TBN's current licensee, walking backwards.
- Gillis, Thomas BTXgranted 2008-07-01cancelled 2008-07-25
Successor callsigns
Callsigns held now by people who previously held K5TBN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5TBN, oldest first.
- MONTGOMERY, HAROLD L OK1994-02-15 → cancelled 2006-02-16
- Gillis, Thomas B TX2018-04-28 active