Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MCF callsign genealogy
Currently held by Welch, Zachary T
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 W7MCF's current licensee, walking backwards.
- Welch, Zachary TORgranted 2015-02-13cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held W7MCF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MCF, oldest first.
- SPRENG, DOUGLAS C AZ2003-02-01 → cancelled 2014-02-08
- Welch, Zachary T OR2025-06-10 active