Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB9RF callsign genealogy
Currently held by Heller, Mark
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 WB9RF's current licensee, walking backwards.
- Heller, MarkWIgranted 2005-09-20cancelled 2011-12-16
Successor callsigns
Callsigns held now by people who previously held WB9RF.
No current licensee on record previously held this callsign.