Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF9ZD callsign genealogy
Currently held by Koch, Richard 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 KF9ZD's current licensee, walking backwards.
- Koch, Richard AWIgranted 1995-09-01cancelled 2002-10-29
Successor callsigns
Callsigns held now by people who previously held KF9ZD.
- Koch, Richard AWIgranted 1995-09-01cancelled 2002-10-29
All historical holders
Every license row we've seen with the callsign KF9ZD, oldest first.
- Koch, Richard A WI1995-09-01 → cancelled 2002-04-05
- Koch, Richard A WI2012-08-01 → cancelled 2024-12-03