Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KL7ERP callsign genealogy
Currently held by HAARP AMATEUR RADIO 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 KL7ERP's current licensee, walking backwards.
- WL7CYLcancelledHAARP Amateur Radio ClubAKgranted 2020-04-20cancelled 2020-05-19
Successor callsigns
Callsigns held now by people who previously held KL7ERP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KL7ERP, oldest first.
- HAARP AMATEUR RADIO CLUB AK2007-08-25 → cancelled 2019-08-27
- HAARP Amateur Radio Club AK2020-05-19 active