Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ISO callsign genealogy
Currently held by Drake, Daniel J
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 W4ISO's current licensee, walking backwards.
- Drake, Daniel JNCgranted 2000-07-20cancelled 2005-06-21
Successor callsigns
Callsigns held now by people who previously held W4ISO.
No current licensee on record previously held this callsign.