Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0LSM callsign genealogy
Currently held by Mahaffy, Lorrence S
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 W0LSM's current licensee, walking backwards.
- Mahaffy, Lorrence SCOgranted 2021-08-30cancelled 2021-09-17
Successor callsigns
Callsigns held now by people who previously held W0LSM.
No current licensee on record previously held this callsign.