Confidence: Medium · Source: FCC ULS · As of 2026-09-15
W4RBT callsign genealogy
Currently held by SALLSTROM, ROBERT 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 W4RBT's current licensee, walking backwards.
- SALLSTROM, ROBERT CGAgranted 1999-03-04cancelled 2004-03-31
Successor callsigns
Callsigns held now by people who previously held W4RBT.
No current licensee on record previously held this callsign.