Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7JAM callsign genealogy
Currently held by JAMISON, CHRISTOPHER 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 KC7JAM's current licensee, walking backwards.
- Jamison, Christopher RORgranted 2016-06-15cancelled 2016-07-12
Successor callsigns
Callsigns held now by people who previously held KC7JAM.
All historical holders
Every license row we've seen with the callsign KC7JAM, oldest first.
- Cook, Gerald E WA2005-01-25 → cancelled 2008-04-23
- JAMISON, CHRISTOPHER R OR2016-07-12 → cancelled 2018-01-09