Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4CBN callsign genealogy
Currently held by NEEDHAM, CHARLES 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 N4CBN's current licensee, walking backwards.
- NEEDHAM, CHARLES BNCgranted 2018-01-19cancelled 2018-03-20
Successor callsigns
Callsigns held now by people who previously held N4CBN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4CBN, oldest first.
- SWITZER, BETTY T NC2005-09-01 → cancelled 2017-11-29
- NEEDHAM, CHARLES B NC2018-03-20 active