Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4LM callsign genealogy
Currently held by Grebe, David L
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 WA4LM's current licensee, walking backwards.
- Grebe, David LVAgranted 2008-02-14cancelled 2013-07-26
Successor callsigns
Callsigns held now by people who previously held WA4LM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4LM, oldest first.
- MASSEY, LEONARD NC1999-02-26 → cancelled 2011-03-01
- Grebe, David L VA2023-05-04 active