Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9EJN callsign genealogy
Currently held by Grinder, Jonathan H
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 W9EJN's current licensee, walking backwards.
- Grinder, Jonathan HOHgranted 2013-06-25cancelled 2014-03-14
Successor callsigns
Callsigns held now by people who previously held W9EJN.
No current licensee on record previously held this callsign.