Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7HWK callsign genealogy
Currently held by CRABTREE, MICHAEL M 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 KC7HWK's current licensee, walking backwards.
- SMITH JR, K CWAgranted 1998-03-10cancelled 2007-04-03
Successor callsigns
Callsigns held now by people who previously held KC7HWK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7HWK, oldest first.
- CRABTREE, MICHAEL M R AZ1995-02-24 → cancelled 2006-12-30
- SMITH JR, K C WA2017-03-28 active