Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1SLO callsign genealogy
Currently held by Ounapuu, Sharon 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 N1SLO's current licensee, walking backwards.
- Ounapuu, Sharon LORgranted 2017-06-09cancelled 2017-06-27
Successor callsigns
Callsigns held now by people who previously held N1SLO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1SLO, oldest first.
- YANG, THOMAS S MA1994-07-14 → cancelled 2006-07-15
- Ounapuu, Sharon L OR2017-06-27 active