Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ITZ callsign genealogy
Currently held by Wilpitz IV, Louis W
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 W9ITZ's current licensee, walking backwards.
- Wilpitz IV, Louis WTXgranted 2013-01-04cancelled 2015-08-07
Successor callsigns
Callsigns held now by people who previously held W9ITZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9ITZ, oldest first.
- MAHNKE, EDWARD H IL1996-05-31 → cancelled 2008-06-03
- Wilpitz IV, Louis W TX2015-08-07 active