Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7TBO callsign genealogy
Currently held by CASPERSON, GARY 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 N7TBO's current licensee, walking backwards.
- SIMPSON, ROGER EUTgranted 2013-02-20cancelled 2019-04-09
Successor callsigns
Callsigns held now by people who previously held N7TBO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7TBO, oldest first.
- CASPERSON, GARY L WA2001-05-04 → cancelled 2013-07-24
- Simpson, Roger E UT2019-04-09 active