Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KG5JS callsign genealogy
Currently held by Schweitzer IV, Joseph S
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 KG5JS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KG5JS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG5JS, oldest first.
- CZERWINSKI, MICHAEL H LA1988-05-03 → cancelled 2000-05-04
- Schweitzer IV, Joseph S TX2026-05-22 active