Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ7B callsign genealogy
Currently held by JENSEN, KARL E
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 KJ7B's current licensee, walking backwards.
- Bair Jr, John RWAgranted 2010-03-24cancelled 2010-04-13
Successor callsigns
Callsigns held now by people who previously held KJ7B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ7B, oldest first.
- JENSEN, KARL E PA1998-03-09 → cancelled 2010-03-10
- Bair Jr, John R WA2020-03-17 active