Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4HRK callsign genealogy
Currently held by Herklotz, Robert A
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 KM4HRK's current licensee, walking backwards.
- Herklotz, Robert ATNgranted 2014-11-24cancelled 2015-01-27
Successor callsigns
Callsigns held now by people who previously held KM4HRK.
- Herklotz, Robert ATNgranted 2018-01-20