Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4AVO callsign genealogy
Currently held by PLOEGER JR, FRED E
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 KJ4AVO's current licensee, walking backwards.
- Ploeger Jr, Fred ENCgranted 2004-01-26cancelled 2007-11-28
Successor callsigns
Callsigns held now by people who previously held KJ4AVO.
- PLOEGER JR, FRED ENCgranted 2023-11-10