Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4IKR callsign genealogy
Currently held by SHOFSTAHL, DAVID R
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 WB4IKR's current licensee, walking backwards.
- SHOFSTAHL, DAVID RGAgranted 2018-10-11cancelled 2018-11-03
Successor callsigns
Callsigns held now by people who previously held WB4IKR.
No current licensee on record previously held this callsign.