Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1OSC callsign genealogy
Currently held by McGuire, Jerry L
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 W1OSC's current licensee, walking backwards.
- McGuire, Jerry LAZgranted 2016-10-27cancelled 2016-11-15
Successor callsigns
Callsigns held now by people who previously held W1OSC.
No current licensee on record previously held this callsign.