Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7CRR callsign genealogy
Currently held by SPALDING, WILLIAM 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 K7CRR's current licensee, walking backwards.
- SPALDING, WILLIAM LORgranted 2018-05-15cancelled 2018-06-05
Successor callsigns
Callsigns held now by people who previously held K7CRR.
- SPALDING, WILLIAM LORgranted 2018-05-15cancelled 2018-06-05
All historical holders
Every license row we've seen with the callsign K7CRR, oldest first.
- SPALDING, WILLIAM L OR2009-03-20 → cancelled 2018-05-15
- SPALDING, WILLIAM L OK2018-06-05 active