Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TLD callsign genealogy
Currently held by CALLIS SR, HOWARD C
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 K4TLD's current licensee, walking backwards.
- Dover Jr, Thomas LGAgranted 2020-10-06cancelled 2020-10-31
Successor callsigns
Callsigns held now by people who previously held K4TLD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TLD, oldest first.
- CALLIS SR, HOWARD C VA2003-09-16 → cancelled 2015-12-15
- Dover Jr, Thomas L AL2020-10-31 active