Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4YHO callsign genealogy
Currently held by KARLIN, PHILIP H
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 WB4YHO's current licensee, walking backwards.
- KARLIN, PHILIP HGAgranted 2019-10-08
Successor callsigns
Callsigns held now by people who previously held WB4YHO.
- KARLIN, PHILIP HGAgranted 2019-10-08