Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4IPD callsign genealogy
Currently held by Sack, Roger D
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 W4IPD's current licensee, walking backwards.
- DEWACHTER, DIRK EOKgranted 2017-10-17cancelled 2023-11-18
Successor callsigns
Callsigns held now by people who previously held W4IPD.
- SACK, ROGER DFLgranted 2013-09-17cancelled 2020-03-10
All historical holders
Every license row we've seen with the callsign W4IPD, oldest first.
- Sack, Roger D VA1999-03-25 → cancelled 2003-11-21
- DEWACHTER, DIRK E OK2023-11-18 active