Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR5N callsign genealogy
Currently held by LEATHAM, MARCUS C
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 KR5N's current licensee, walking backwards.
- ROLSMA, GARRY BTXgranted 2014-12-09cancelled 2024-11-09
Successor callsigns
Callsigns held now by people who previously held KR5N.
- KRIZAN, FRANK JTXgranted 2022-10-21
All historical holders
Every license row we've seen with the callsign KR5N, oldest first.
- LEATHAM, MARCUS C OH2008-12-17 → cancelled 2021-01-28
- KRIZAN, FRANK J TX2021-02-17 → cancelled 2022-10-21
- ROLSMA, GARRY B TX2024-11-09 active