Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7PHI callsign genealogy
Currently held by KALBERG, ROBERT C
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 N7PHI's current licensee, walking backwards.
- HANSEN, DEREK JUTgranted 2018-01-09cancelled 2020-06-06
Successor callsigns
Callsigns held now by people who previously held N7PHI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7PHI, oldest first.
- KALBERG, ROBERT C ID1990-07-24 → cancelled 2002-07-25
- HANSEN, DEREK J UT2020-06-06 active