Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4PI callsign genealogy
Currently held by Stein, 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 KX4PI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KX4PI.
- Stein, Todd JGAgranted 2019-02-22