Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4LKO callsign genealogy
Currently held by STAUSS, HERBERT 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 W4LKO's current licensee, walking backwards.
- Sinclair, Jeff MALgranted 2010-09-14cancelled 2016-09-13
Successor callsigns
Callsigns held now by people who previously held W4LKO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4LKO, oldest first.
- STAUSS, HERBERT H FL1987-09-29 → cancelled 1999-09-30
- Sinclair, Jeff M AL2016-09-13 active