Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD7JB callsign genealogy
Currently held by Blake Jr, James 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 KD7JB's current licensee, walking backwards.
- Blake Jr, James LWAgranted 2008-05-27cancelled 2010-06-25
Successor callsigns
Callsigns held now by people who previously held KD7JB.
- Black, David HUTgranted 2023-07-18
All historical holders
Every license row we've seen with the callsign KD7JB, oldest first.
- Black, David H UT1993-08-17 → cancelled 2002-01-17
- Blake Jr, James L WA2020-03-31 active