Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4RKK callsign genealogy
Currently held by Krebs, Richard M
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 K4RKK's current licensee, walking backwards.
- Krebs, Richard MGAgranted 2021-05-24cancelled 2021-07-24
Successor callsigns
Callsigns held now by people who previously held K4RKK.
No current licensee on record previously held this callsign.