Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SRV callsign genealogy
Currently held by SULLIVAN, KEVIN L
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 K4SRV's current licensee, walking backwards.
- Rev, StevenCAgranted 2018-12-18cancelled 2020-08-21
Successor callsigns
Callsigns held now by people who previously held K4SRV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SRV, oldest first.
- SULLIVAN, KEVIN L CA1998-07-15 → cancelled 2010-07-16
- Rev, Steven CA2020-08-21 active