Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9RKD callsign genealogy
Currently held by LUMPKIN, WILLIAM J
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 KA9RKD's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KA9RKD.
- LUMPKIN, WILLIAM JINgranted 2014-08-15cancelled 2026-08-18