Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5MSK callsign genealogy
Currently held by Grabove, Jason M
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 N5MSK's current licensee, walking backwards.
- Grabove, Jason MNMgranted 2020-12-29cancelled 2021-01-19
Successor callsigns
Callsigns held now by people who previously held N5MSK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5MSK, oldest first.
- Grabove, Jason M NM2021-01-19 active
- —— → cancelled 1998-04-29