Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0LMP callsign genealogy
Currently held by GUSTOFSON, HAROLD E
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 W0LMP's current licensee, walking backwards.
- Puthoff, Leonard MIAgranted 2017-10-03cancelled 2017-10-28
Successor callsigns
Callsigns held now by people who previously held W0LMP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0LMP, oldest first.
- GUSTOFSON, HAROLD E IA1994-03-29 → cancelled 2006-03-30
- Puthoff, Leonard M IA2017-10-28 active