Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ESV callsign genealogy
Currently held by VALLIN PhD, RICHARD C
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 K4ESV's current licensee, walking backwards.
- VALLIN, RICHARD CFLgranted 2004-07-27cancelled 2012-08-07
Successor callsigns
Callsigns held now by people who previously held K4ESV.
No current licensee on record previously held this callsign.