Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N8CTB callsign genealogy
Currently held by VIERS, MARK 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 N8CTB's current licensee, walking backwards.
- Behm, ChrisMIgranted 2005-02-17cancelled 2013-12-20
Successor callsigns
Callsigns held now by people who previously held N8CTB.
- Viers, Mark BVAgranted 2017-08-28
All historical holders
Every license row we've seen with the callsign N8CTB, oldest first.
- Behm, Chris MI2023-10-11 active
- VIERS, MARK B— → cancelled 1997-11-24