Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3SDP callsign genealogy
Currently held by Preston, Samuel D
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 KC3SDP's current licensee, walking backwards.
- Preston, Samuel DPAgranted 2019-12-02cancelled 2019-12-20
Successor callsigns
Callsigns held now by people who previously held KC3SDP.
No current licensee on record previously held this callsign.