Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4HB callsign genealogy
Currently held by SUTHERLAND, JOHN L
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 KJ4HB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KJ4HB.
- SUTHERLAND, JOHN LTNgranted 1995-04-22cancelled 2003-01-03
All historical holders
Every license row we've seen with the callsign KJ4HB, oldest first.
- SUTHERLAND, JOHN L TN1995-04-22 → cancelled 2000-05-11
- SUTHERLAND, JOHN L TN2018-05-31 active