Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9TPF callsign genealogy
Currently held by HELMS, KENNETH A
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 KC9TPF's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC9TPF.
- HELMS, KENNETH ATNgranted 2011-02-01cancelled 2019-04-05