Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JAS callsign genealogy
Currently held by GLENN, FORREST 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 K4JAS's current licensee, walking backwards.
- SHEADS, JEFF AVAgranted 2020-06-17cancelled 2020-11-20
Successor callsigns
Callsigns held now by people who previously held K4JAS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JAS, oldest first.
- GLENN, FORREST E FL2008-02-07 → cancelled 2020-04-21
- SHEADS, JEFF A VA2020-11-20 active