Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6RDJ callsign genealogy
Currently held by HARMON, JOHN B
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 W6RDJ's current licensee, walking backwards.
- Johnson, Roger DCAgranted 2010-03-05cancelled 2012-04-06
Successor callsigns
Callsigns held now by people who previously held W6RDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6RDJ, oldest first.
- HARMON, JOHN B IN1994-06-15 → cancelled 2001-10-20
- Johnson, Roger D UT2023-01-06 active