Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4TTN callsign genealogy
Currently held by Campbell, Joseph 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 W4TTN's current licensee, walking backwards.
- Campbell, Joseph HALgranted 2010-06-02cancelled 2010-06-26
Successor callsigns
Callsigns held now by people who previously held W4TTN.
No current licensee on record previously held this callsign.