Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4THP callsign genealogy
Currently held by BOLTON, CLAUDE 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 W4THP's current licensee, walking backwards.
- Moore, Robert WTNgranted 2018-04-04cancelled 2018-05-25
Successor callsigns
Callsigns held now by people who previously held W4THP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4THP, oldest first.
- BOLTON, CLAUDE J TN1997-04-09 → cancelled 2009-04-10
- Moore, Robert W TN2018-05-25 active