Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4RDP callsign genealogy
Currently held by Parker, Robert D
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 KR4RDP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KR4RDP.
No current licensee on record previously held this callsign.