Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9DIY callsign genealogy
Currently held by Howard, Christopher K
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 W9DIY's current licensee, walking backwards.
- Howard, Christopher KINgranted 2013-06-07cancelled 2013-11-16
Successor callsigns
Callsigns held now by people who previously held W9DIY.
No current licensee on record previously held this callsign.