Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MM callsign genealogy
Currently held by Trexlertown International Transmitting Society
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 W3MM's current licensee, walking backwards.
- KC3LYQcancelledTrexlertown International Transmitting SocietyPAgranted 2018-08-20cancelled 2019-01-01
Successor callsigns
Callsigns held now by people who previously held W3MM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MM, oldest first.
- Evelyn, David E PA2016-03-14 → cancelled 2017-07-26
- Trexlertown International Transmitting Society PA2019-01-01 active