Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC4JSR callsign genealogy
Currently held by Rowland, Joseph S
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 KC4JSR's current licensee, walking backwards.
- Rowland, Joseph SFLgranted 2024-02-22cancelled 2024-03-15
Successor callsigns
Callsigns held now by people who previously held KC4JSR.
No current licensee on record previously held this callsign.