Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB3WTF callsign genealogy
Currently held by Altman III, Donald R
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 WB3WTF's current licensee, walking backwards.
- Altman III, Donald RMDgranted 2023-07-11cancelled 2023-08-08
Successor callsigns
Callsigns held now by people who previously held WB3WTF.
No current licensee on record previously held this callsign.