Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4ISB callsign genealogy
Currently held by European PSK Club US (Section 4)
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 KJ4ISB's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KJ4ISB.
- N4EPCexpiredEuropean PSK Club US (Section 4)VAgranted 2009-01-23cancelled 2021-01-26