Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1TIM callsign genealogy
Currently held by Prosser, Timothy 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 WA1TIM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA1TIM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA1TIM, oldest first.
- Prosser, Timothy M FL2010-08-03 → cancelled 2022-08-04
- Holmes, Timothy A WA2024-12-24 active