Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7WHM callsign genealogy
Currently held by Merrin, Walter 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 W7WHM's current licensee, walking backwards.
- Wilhelm, Dale JORgranted 2018-04-17cancelled 2018-05-05
Successor callsigns
Callsigns held now by people who previously held W7WHM.
- Merrin, Walter HWAgranted 2015-03-03
All historical holders
Every license row we've seen with the callsign W7WHM, oldest first.
- Merrin, Walter H WA2002-10-29 → cancelled 2005-04-05
- Wilhelm, Dale J OR2018-05-05 active