Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DPI callsign genealogy
Currently held by BARON, MARVIN 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 K4DPI's current licensee, walking backwards.
- KALEN, KEVIN LFLgranted 1999-04-28cancelled 2003-04-15
Successor callsigns
Callsigns held now by people who previously held K4DPI.
- KALEN, KEVIN LTNgranted 2019-05-10
All historical holders
Every license row we've seen with the callsign K4DPI, oldest first.
- BARON, MARVIN C FL1994-09-28 → cancelled 2001-05-07
- KALEN, KEVIN L IN2003-04-15 → cancelled 2009-05-19