Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0LM callsign genealogy
Currently held by HARRINGTON, LOU 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 W0LM's current licensee, walking backwards.
- Oswood, Mark CMNgranted 2003-04-19cancelled 2006-01-06
- KD1PXno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W0LM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0LM, oldest first.
- HARRINGTON, LOU E CO1994-01-18 → cancelled 2000-02-21
- Oswood, Mark C MN2025-11-21 active