Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3TBM callsign genealogy
Currently held by Macintosh, Thomas B
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 K3TBM's current licensee, walking backwards.
- Macintosh, Thomas BPAgranted 2010-04-13cancelled 2011-05-17
Successor callsigns
Callsigns held now by people who previously held K3TBM.
- Macintosh, Thomas BPAgranted 2023-05-09