Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW7YZ callsign genealogy
Currently held by Jacobsen, David 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 KW7YZ's current licensee, walking backwards.
- Jacobsen, David RAZgranted 2016-03-15cancelled 2017-08-01
Successor callsigns
Callsigns held now by people who previously held KW7YZ.
No current licensee on record previously held this callsign.