Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4WTA callsign genealogy
Currently held by Petri, Robert M
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 K4WTA's current licensee, walking backwards.
- Petri, Robert MALgranted 2015-10-15cancelled 2021-07-02
Successor callsigns
Callsigns held now by people who previously held K4WTA.
- Petri, Robert MALgranted 2022-12-09cancelled 2024-08-23