Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4BSW callsign genealogy
Currently held by LONGENECKER, JOHN 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 KO4BSW's current licensee, walking backwards.
- LONGENECKER, JOHN EVAgranted 2010-05-12cancelled 2020-02-10
Successor callsigns
Callsigns held now by people who previously held KO4BSW.
- LONGENECKER, JOHN EVAgranted 2020-04-28