Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4ABC callsign genealogy
Currently held by Karp, Howard R
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 KX4ABC's current licensee, walking backwards.
- KARP, HOWARD RFLgranted 2005-02-07cancelled 2005-02-26
Successor callsigns
Callsigns held now by people who previously held KX4ABC.
No current licensee on record previously held this callsign.