Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK7TH callsign genealogy
Currently held by GERDES, HENRY D
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 KK7TH's current licensee, walking backwards.
- Hawthorne, Timothy AUTgranted 2015-05-01cancelled 2015-06-16
Successor callsigns
Callsigns held now by people who previously held KK7TH.
- Gerdes, Henry DIDgranted 1999-06-03cancelled 2010-12-16
All historical holders
Every license row we've seen with the callsign KK7TH, oldest first.
- GERDES, HENRY D ID1999-06-03 → cancelled 2000-05-26
- Hawthorne, Timothy A MA2025-04-08 active