Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NM5TS callsign genealogy
Currently held by Sipf, Thomas 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 NM5TS's current licensee, walking backwards.
- Sipf, Thomas ENMgranted 2020-06-23cancelled 2022-05-06
Successor callsigns
Callsigns held now by people who previously held NM5TS.
No current licensee on record previously held this callsign.