Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RHR callsign genealogy
Currently held by Ross, Robert H
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 K4RHR's current licensee, walking backwards.
- Rowland, Richard HSCgranted 2021-09-07cancelled 2021-12-04
Successor callsigns
Callsigns held now by people who previously held K4RHR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4RHR, oldest first.
- Ross, Robert H FL2007-12-14 → cancelled 2019-12-17
- Rowland, Richard H SC2021-12-04 active