Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NI3S callsign genealogy
Currently held by Geddes Jr, William R
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 NI3S's current licensee, walking backwards.
- Geddes, William RPAgranted 2004-11-23cancelled 2010-11-06
Successor callsigns
Callsigns held now by people who previously held NI3S.
- TICHANSKY, ERIC MPAgranted 2018-05-22
All historical holders
Every license row we've seen with the callsign NI3S, oldest first.
- TICHANSKY, ERIC M PA2007-08-09 → cancelled 2008-08-05
- Geddes Jr, William R PA2020-09-01 active