Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7OMC callsign genealogy
Currently held by HERSCHER, JOHN J
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 WA7OMC's current licensee, walking backwards.
- HERSCHER, JOHN JORgranted 1998-10-07cancelled 2004-09-21
Successor callsigns
Callsigns held now by people who previously held WA7OMC.
- HERSCHER, JOHN JKSgranted 2016-11-08