Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9RCK callsign genealogy
Currently held by MANDEL, RICK 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 K9RCK's current licensee, walking backwards.
- Calvert, Richard DILgranted 2009-12-01cancelled 2016-01-30
Successor callsigns
Callsigns held now by people who previously held K9RCK.
- Calvert, Richard DMOgranted 2020-09-29
All historical holders
Every license row we've seen with the callsign K9RCK, oldest first.
- MANDEL, RICK A WI2003-11-01 → cancelled 2015-11-03
- Calvert, Richard D MO2016-01-30 → cancelled 2020-09-29