Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4PU callsign genealogy
Currently held by Witenstein, David 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 KX4PU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KX4PU.
- Witenstein, David JFLgranted 2019-03-01cancelled 2019-04-26