Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5MCB callsign genealogy
Currently held by BAUMGARTNER III, MARVIN C
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 N5MCB's current licensee, walking backwards.
- BAUMGARTNER III, MARVIN CTXgranted 2018-01-29cancelled 2020-09-22
Successor callsigns
Callsigns held now by people who previously held N5MCB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5MCB, oldest first.
- KIDDER, BRUCE A TX2008-03-14 → cancelled 2020-05-23
- BAUMGARTNER III, MARVIN C TX2020-09-22 active