Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KG7UME callsign genealogy
Currently held by Helm, Thomas 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 KG7UME's current licensee, walking backwards.
- Helm, Thomas CWAgranted 2015-01-26cancelled 2015-06-16
Successor callsigns
Callsigns held now by people who previously held KG7UME.
- Helm, Thomas CWAgranted 2015-01-26cancelled 2017-04-18