Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4TEE callsign genealogy
Currently held by RAMSDELL, MICHAEL W
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 WD4TEE's current licensee, walking backwards.
- RAMSDELL, MICHAEL WSCgranted 2014-04-14cancelled 2014-05-09
Successor callsigns
Callsigns held now by people who previously held WD4TEE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4TEE, oldest first.
- BOLLMAN, GREG R CA1998-02-26 → cancelled 2010-02-27
- RAMSDELL, MICHAEL W TX2024-07-06 active