Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8US callsign genealogy
Currently held by Posthuma, David A
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 W8US's current licensee, walking backwards.
- Posthuma, David AMIgranted 2013-07-31cancelled 2022-12-16
Successor callsigns
Callsigns held now by people who previously held W8US.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8US, oldest first.
- von Chrustschoff, Peter A TN2010-08-30 → cancelled 2022-11-29
- Posthuma, David A MI2022-12-16 active