Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ABI callsign genealogy
Currently held by LANGE, NEAL 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 K4ABI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4ABI.
- ROSSITER, JAMES MCAgranted 2000-06-20cancelled 2002-04-10
All historical holders
Every license row we've seen with the callsign K4ABI, oldest first.
- ROSSITER, JAMES M FL2000-06-02 → cancelled 2000-06-20
- LANGE, NEAL E FL2014-08-08 → cancelled 2026-08-12