Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OBH callsign genealogy
Currently held by Warlitner, Todd J
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 K4OBH's current licensee, walking backwards.
- Warlitner, Todd JNCgranted 2010-04-27cancelled 2012-05-22
Successor callsigns
Callsigns held now by people who previously held K4OBH.
No current licensee on record previously held this callsign.