Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI5RLY callsign genealogy
Currently held by GUEMMER, DONALD G
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 KI5RLY's current licensee, walking backwards.
- GUEMMER, DONALD GTXgranted 2021-11-13cancelled 2024-10-22
Successor callsigns
Callsigns held now by people who previously held KI5RLY.
- GUEMMER, DONALD GTXgranted 2021-11-13cancelled 2024-10-22