Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5NZ callsign genealogy
Currently held by Wintersole, Mark S
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 W5NZ's current licensee, walking backwards.
- Wintersole, Mark SALgranted 2005-10-20cancelled 2011-12-02
Successor callsigns
Callsigns held now by people who previously held W5NZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5NZ, oldest first.
- Phillips, Robert E TX2008-02-05 → cancelled 2009-11-11
- Wintersole, Mark S AL2021-09-30 active