Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB9EMS callsign genealogy
Currently held by BORCHARDT, SHARON L
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 KB9EMS's current licensee, walking backwards.
- Weingartner, Michael SINgranted 2026-06-30cancelled 2026-07-21
Successor callsigns
Callsigns held now by people who previously held KB9EMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9EMS, oldest first.
- BORCHARDT, SHARON L IL1991-10-29 → cancelled 2003-10-30
- Weingartner, Michael S IN2026-07-21 active