Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8GU callsign genealogy
Currently held by Adams, Robert M
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 W8GU's current licensee, walking backwards.
- SLADEN, MARK ROHgranted 2005-11-05cancelled 2011-10-29
Successor callsigns
Callsigns held now by people who previously held W8GU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8GU, oldest first.
- KING, DONALD B FL1994-03-01 → cancelled 2001-06-21
- Adams, Robert M WV2005-05-03 → cancelled 2009-10-10
- Sladen, Mark R OH2021-08-03 active