Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB7ISU callsign genealogy
Currently held by BURCHARD, ROBYN E
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 KB7ISU's current licensee, walking backwards.
- RAABE, ROBYN EWAgranted 2012-12-07cancelled 2013-06-29
Successor callsigns
Callsigns held now by people who previously held KB7ISU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7ISU, oldest first.
- BURCHARD, ROBYN E WA1989-10-03 → cancelled 2001-10-04
- RAABE, ROBYN E WA2013-06-29 → cancelled 2025-07-01