Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2MSR callsign genealogy
Currently held by Kaiser, John M
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 W2MSR's current licensee, walking backwards.
- KE2GCHcancelledMother Seton Amateur Radio ClubNJgranted 2025-05-24cancelled 2025-06-14
Successor callsigns
Callsigns held now by people who previously held W2MSR.
- ROBBINS, MARK SNYgranted 2017-01-17
All historical holders
Every license row we've seen with the callsign W2MSR, oldest first.
- Kaiser, John M ME2013-10-24 → cancelled 2021-02-22
- Mother Seton Amateur Radio Club NJ2025-06-14 active