Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DSP callsign genealogy
Currently held by SOBEL, STEVEN J
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 N4DSP's current licensee, walking backwards.
- SOBEL, STEVEN JNCgranted 2014-08-20cancelled 2021-04-03
Successor callsigns
Callsigns held now by people who previously held N4DSP.
- SHEA, JOHN ENCgranted 2017-12-09
All historical holders
Every license row we've seen with the callsign N4DSP, oldest first.
- SHEA, JOHN E NC2016-05-23 → cancelled 2017-12-09
- SOBEL, STEVEN J NC2021-04-03 active