Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4JCM callsign genealogy
Currently held by MC SWAIN, JEFFERY C
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 WA4JCM's current licensee, walking backwards.
- MC SWAIN, JEFFERY CNCgranted 1998-09-12cancelled 2002-12-07
Successor callsigns
Callsigns held now by people who previously held WA4JCM.
No current licensee on record previously held this callsign.