Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1RH callsign genealogy
Currently held by Heath III, Robert C
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 K1RH's current licensee, walking backwards.
- Heath III, Robert CMDgranted 2001-07-23cancelled 2001-10-07
Successor callsigns
Callsigns held now by people who previously held K1RH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1RH, oldest first.
- HIRSCH, RALPH M CT1996-06-13 → cancelled 1999-05-23
- Heath III, Robert C MD2021-07-09 active