Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RFP callsign genealogy
Currently held by SEYMOUR, MARK 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 K4RFP's current licensee, walking backwards.
- SEYMOUR, MARK AVAgranted 2000-12-13cancelled 2001-01-03
Successor callsigns
Callsigns held now by people who previously held K4RFP.
No current licensee on record previously held this callsign.