Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3JAM callsign genealogy
Currently held by MACDONALD, JEFFREY A
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 W3JAM's current licensee, walking backwards.
- MAC DONALD, JEFFREY APAgranted 1998-08-21cancelled 2002-06-11
Successor callsigns
Callsigns held now by people who previously held W3JAM.
No current licensee on record previously held this callsign.