Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JDP callsign genealogy
Currently held by PORTERFIELD, JAMES 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 K9JDP's current licensee, walking backwards.
- PORTERFIELD, JAMES DSCgranted 2014-02-18cancelled 2014-03-15
Successor callsigns
Callsigns held now by people who previously held K9JDP.
No current licensee on record previously held this callsign.