Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7KWJ callsign genealogy
Currently held by Birch, William R
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 KC7KWJ's current licensee, walking backwards.
- Birch, William RIDgranted 2023-04-22cancelled 2023-05-23
Successor callsigns
Callsigns held now by people who previously held KC7KWJ.
- BIRCH, ROBERT GIDgranted 2015-03-17
All historical holders
Every license row we've seen with the callsign KC7KWJ, oldest first.
- BIRCH, ROBERT G ID2005-03-16 → cancelled 2008-04-30
- Birch, William R ID2023-05-23 active