Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TMF callsign genealogy
Currently held by Maher, Timothy J
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 W4TMF's current licensee, walking backwards.
- Maher, Timothy JFLgranted 2017-08-01cancelled 2017-08-19
Successor callsigns
Callsigns held now by people who previously held W4TMF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TMF, oldest first.
- MC LEOD SR, WILLIAM D FL1997-04-04 → cancelled 2009-04-07
- Maher, Timothy J FL2017-08-19 active