Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7OTW callsign genealogy
Currently held by Renfro, Donald T
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 N7OTW's current licensee, walking backwards.
- Renfro, Don TWAgranted 2014-01-30cancelled 2014-07-12
Successor callsigns
Callsigns held now by people who previously held N7OTW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7OTW, oldest first.
- Milner Sr, George M WA2000-05-31 → cancelled 2012-06-01
- Renfro, Donald T WA2025-01-28 active