Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6CAL callsign genealogy
Currently held by HUDSPETH, MARK 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 W6CAL's current licensee, walking backwards.
- HUDSPETH, MARK RCAgranted 2009-06-23cancelled 2009-08-01
Successor callsigns
Callsigns held now by people who previously held W6CAL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6CAL, oldest first.
- KNIGHT, GEORGE M CA1997-12-05 → cancelled 2006-01-06
- HUDSPETH, MARK R CA2019-06-28 active