Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4RWM callsign genealogy
Currently held by SCHWEIKART, WILLIAM H
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 W4RWM's current licensee, walking backwards.
- SCHWEIKART, WILLIAM HFLgranted 2001-05-18cancelled 2009-11-24
Successor callsigns
Callsigns held now by people who previously held W4RWM.
- Mees, Robert WMNgranted 2003-11-18cancelled 2009-10-09
All historical holders
Every license row we've seen with the callsign W4RWM, oldest first.
- Mees, Robert W MN2000-07-26 → cancelled 2003-11-18
- SCHWEIKART, WILLIAM H FL2019-09-13 active