Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ7KWZ callsign genealogy
Currently held by Zumr, Keith W
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 KJ7KWZ's current licensee, walking backwards.
- Zumr, Keith WIDgranted 2019-01-31cancelled 2019-03-19
Successor callsigns
Callsigns held now by people who previously held KJ7KWZ.
- Zumr, Keith WIDgranted 2019-12-17