Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7BTL callsign genealogy
Currently held by PERTILE, DONNA C
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 K7BTL's current licensee, walking backwards.
- JOHNSON, BRIANMTgranted 2024-08-14cancelled 2024-09-04
Successor callsigns
Callsigns held now by people who previously held K7BTL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7BTL, oldest first.
- PERTILE, DONNA C WA2005-12-15 → cancelled 2018-03-15
- JOHNSON, BRIAN P MT2024-09-04 active