Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB7XW callsign genealogy
Currently held by Kramer, Mark 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 WB7XW's current licensee, walking backwards.
- Kramer, Mark CWAgranted 2020-06-18cancelled 2020-07-28
Successor callsigns
Callsigns held now by people who previously held WB7XW.
- Kramer, Mark CWAgranted 2021-02-09