Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4HRK callsign genealogy
Currently held by LUMLEY, FRANCIS 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 K4HRK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4HRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HRK, oldest first.
- LUMLEY, FRANCIS M FL1994-07-08 → cancelled 2006-07-11
- Herklotz, Robert A TN2018-01-20 active