Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW4JO callsign genealogy
Currently held by Peel Jr, Joseph 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 KW4JO's current licensee, walking backwards.
- Marcal, JoaoFLgranted 2016-03-04cancelled 2017-05-27
Successor callsigns
Callsigns held now by people who previously held KW4JO.
All historical holders
Every license row we've seen with the callsign KW4JO, oldest first.
- Peel Jr, Joseph C AL2013-09-04 → cancelled 2013-09-24
- Marcal, Joao FL2017-05-27 → cancelled 2025-02-08