Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1CTB callsign genealogy
Currently held by EMMONS, MARVIN 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 N1CTB's current licensee, walking backwards.
- Brown, Chris HTXgranted 2021-03-30cancelled 2021-06-22
Successor callsigns
Callsigns held now by people who previously held N1CTB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1CTB, oldest first.
- EMMONS, MARVIN B TX1998-09-16 → cancelled 2010-09-17
- Brown, Chris H TX2021-06-22 active