Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7PHZ callsign genealogy
Currently held by SUNDBERG, CHARLES S
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 K7PHZ's current licensee, walking backwards.
- Sundberg, Charles SWAgranted 2010-06-02cancelled 2011-09-27
Successor callsigns
Callsigns held now by people who previously held K7PHZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7PHZ, oldest first.
- Carpenter, James D WA2007-04-02 → cancelled 2009-09-07
- SUNDBERG, CHARLES S WA2021-08-31 active