Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ZIP callsign genealogy
Currently held by Scheller, Russell F
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 W4ZIP's current licensee, walking backwards.
- MUNROE, MARK EOHgranted 2015-01-14cancelled 2020-04-28
Successor callsigns
Callsigns held now by people who previously held W4ZIP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ZIP, oldest first.
- Scheller, Russell F FL2007-07-06 → cancelled 2019-09-18
- MUNROE, MARK E OH2020-04-28 active