Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W2UMO callsign genealogy
Currently held by SCHWAB, ARTHUR 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 W2UMO's current licensee, walking backwards.
- SCHWAB, ART FMEgranted 2015-09-17cancelled 2017-12-27
Successor callsigns
Callsigns held now by people who previously held W2UMO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W2UMO, oldest first.
- HOLST, FRANK R NY1988-04-26 → cancelled 2000-04-27
- SCHWAB, ARTHUR F ME2017-12-27 active