Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DOS callsign genealogy
Currently held by Shapiro, David O
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 K3DOS's current licensee, walking backwards.
- Shapiro, David OMDgranted 2005-02-24cancelled 2005-04-15
Successor callsigns
Callsigns held now by people who previously held K3DOS.
No current licensee on record previously held this callsign.