Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7BTM callsign genealogy
Currently held by Dahlstrom, Joshua M
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 K7BTM's current licensee, walking backwards.
- Dahlstrom, Joshua MIDgranted 2008-12-22cancelled 2018-05-04
Successor callsigns
Callsigns held now by people who previously held K7BTM.
No current licensee on record previously held this callsign.