Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MH callsign genealogy
Currently held by McElfresh, 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 W1MH's current licensee, walking backwards.
- McElfresh, Walter HAZgranted 2016-04-12cancelled 2016-05-27
Successor callsigns
Callsigns held now by people who previously held W1MH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1MH, oldest first.
- HARRIS, MICHAEL G NY2006-08-26 → cancelled 2014-05-06
- McElfresh, Walter H AZ2016-05-27 active