Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR1CH callsign genealogy
Currently held by Frahm, Richard D
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 KR1CH's current licensee, walking backwards.
- Frahm, Richard DIAgranted 2022-05-10cancelled 2023-02-04
Successor callsigns
Callsigns held now by people who previously held KR1CH.
No current licensee on record previously held this callsign.