Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR7N callsign genealogy
Currently held by KIRSCHENMAN, MARK S
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 KR7N's current licensee, walking backwards.
- Kirschenman, Mark SORgranted 2006-11-03cancelled 2007-05-25
Successor callsigns
Callsigns held now by people who previously held KR7N.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR7N, oldest first.
- DOWNING, BONAL AZ1996-11-05 → cancelled 2005-01-24
- KIRSCHENMAN, MARK S OR2017-02-28 active