Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4KRS callsign genealogy
Currently held by Shaffer Jr., Ken R
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 K4KRS's current licensee, walking backwards.
- Shaffer Jr., Kenneth RVAgranted 2022-09-29cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held K4KRS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KRS, oldest first.
- SACKETT, KARL R AL2008-10-18 → cancelled 2020-10-30
- Shaffer Jr., Ken R VA2023-03-13 active