Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MP callsign genealogy
Currently held by LINDAHL, RALPH W
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 W7MP's current licensee, walking backwards.
- BOETTIGER, ADAM JORgranted 1998-08-19cancelled 2000-09-01
Successor callsigns
Callsigns held now by people who previously held W7MP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MP, oldest first.
- LINDAHL, RALPH W WA1997-01-09 → cancelled 1997-10-25
- Boettiger, Adam OR2020-06-16 active