Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3OH callsign genealogy
Currently held by Metler, David M
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 W3OH's current licensee, walking backwards.
- Metler, David MMDgranted 2013-03-06cancelled 2016-04-26
Successor callsigns
Callsigns held now by people who previously held W3OH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3OH, oldest first.
- KATILUS, WILLIAM F PA2004-01-20 → cancelled 2016-04-06
- Metler, David M MD2016-04-26 active