Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5SIX callsign genealogy
Currently held by Ferris, Daniel P
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 KC5SIX's current licensee, walking backwards.
- Ferris, Daniel PTXgranted 2020-07-17cancelled 2020-08-07
Successor callsigns
Callsigns held now by people who previously held KC5SIX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5SIX, oldest first.
- SCHWAAB, MATTHEW J TX1996-01-15 → cancelled 2008-01-16
- Ferris, Daniel P TX2020-08-07 active