Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU8H callsign genealogy
Currently held by Machalk, Scott J
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 WU8H's current licensee, walking backwards.
- Machalk, Scott JMIgranted 2020-02-11cancelled 2021-07-27
Successor callsigns
Callsigns held now by people who previously held WU8H.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU8H, oldest first.
- Lamb, Russell B TX2009-05-06 → cancelled 2021-07-07
- Machalk, Scott J MI2021-07-27 active