Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KB4JS callsign genealogy
Currently held by HALL, MARVIN G
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 KB4JS's current licensee, walking backwards.
- STANFORD SR, JULIAN RNCgranted 2015-07-10cancelled 2016-06-03
Successor callsigns
Callsigns held now by people who previously held KB4JS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4JS, oldest first.
- HALL, MARVIN G NC2003-01-10 → cancelled 2015-02-10
- STANFORD SR, JULIAN R NC2016-06-03 active