Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SGZ callsign genealogy
Currently held by Drumm, Christopher P
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 K7SGZ's current licensee, walking backwards.
- Drumm, Christopher PORgranted 2024-03-26cancelled 2024-04-16
Successor callsigns
Callsigns held now by people who previously held K7SGZ.
No current licensee on record previously held this callsign.