Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5JSY callsign genealogy
Currently held by Yerby, John 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 K5JSY's current licensee, walking backwards.
- Yerby, John SOKgranted 2019-03-05cancelled 2019-06-21
Successor callsigns
Callsigns held now by people who previously held K5JSY.
No current licensee on record previously held this callsign.