Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TSK callsign genealogy
Currently held by Koontz, Tammy S
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 K4TSK's current licensee, walking backwards.
- Koontz, Tammy SNCgranted 1999-11-03cancelled 1999-11-23
Successor callsigns
Callsigns held now by people who previously held K4TSK.
No current licensee on record previously held this callsign.