Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7JPO callsign genealogy
Currently held by POELSTRA, JAMES L
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 K7JPO's current licensee, walking backwards.
- POELSTRA, JAMES LMTgranted 2019-01-30cancelled 2019-09-07
Successor callsigns
Callsigns held now by people who previously held K7JPO.
No current licensee on record previously held this callsign.