Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TNC callsign genealogy
Currently held by Bumgardner, Harold R
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 K4TNC's current licensee, walking backwards.
- Bumgardner, Harold RNCgranted 1998-04-27cancelled 2001-02-09
Successor callsigns
Callsigns held now by people who previously held K4TNC.
No current licensee on record previously held this callsign.