Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4DSP callsign genealogy
Currently held by Pearson, David S
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 KZ4DSP's current licensee, walking backwards.
- Pearson, David SNCgranted 2006-11-28cancelled 2006-12-27
Successor callsigns
Callsigns held now by people who previously held KZ4DSP.
- Pearson, David SNCgranted 2019-08-26