Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MSR callsign genealogy
Currently held by MC ALLISTER, JOHN F
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 W7MSR's current licensee, walking backwards.
- Reid, Mack SORgranted 2015-01-26cancelled 2020-03-27
Successor callsigns
Callsigns held now by people who previously held W7MSR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MSR, oldest first.
- MC ALLISTER, JOHN F WA1999-02-12 → cancelled 2001-08-25
- Reid, Mack S OR2020-03-27 active