Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4RJK callsign genealogy
Currently held by Krauth, Robert J
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 K4RJK's current licensee, walking backwards.
- Kramarik, Rich JNCgranted 2021-02-08cancelled 2021-02-27
Successor callsigns
Callsigns held now by people who previously held K4RJK.
- Krauth, Robert JTNgranted 2016-11-04cancelled 2018-12-04
All historical holders
Every license row we've seen with the callsign K4RJK, oldest first.
- LOWERY, HERSHEL M AL2003-10-24 → cancelled 2016-01-19
- Krauth, Robert J TN2016-07-06 → cancelled 2016-11-04
- Kramarik, Rich J NC2021-02-27 active