Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK7PR callsign genealogy
Currently held by PORTLAND RADIO CONTESTER CLUB
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 KK7PR's current licensee, walking backwards.
- KF7BTYcancelledPORTLAND RADIO CONTESTER CLUBORgranted 2009-04-15cancelled 2009-05-22
Successor callsigns
Callsigns held now by people who previously held KK7PR.
- KT7EactivePORTLAND RADIO CONTESTER CLUBORgranted 2018-08-14
All historical holders
Every license row we've seen with the callsign KK7PR, oldest first.
- BILYEU, RALPH O OR2007-07-16 → cancelled 2009-04-14
- PORTLAND RADIO CONTESTER CLUB OR2009-05-22 → cancelled 2018-08-14