Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7RUN callsign genealogy
Currently held by GROBBEN, JOHANNES
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 W7RUN's current licensee, walking backwards.
- Peck, Andrew LAZgranted 2022-05-04cancelled 2022-07-19
Successor callsigns
Callsigns held now by people who previously held W7RUN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7RUN, oldest first.
- GROBBEN, JOHANNES UT2009-08-19 → cancelled 2021-11-17
- Peck, Andrew L AZ2022-07-19 active