Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KR3AM callsign genealogy
Currently held by Sidell, Mark F
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 KR3AM's current licensee, walking backwards.
- Sidell, Mark FNCgranted 2014-03-17cancelled 2014-06-17
Successor callsigns
Callsigns held now by people who previously held KR3AM.
No current licensee on record previously held this callsign.