Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5KDU callsign genealogy
Currently held by Collupy Jr, David M
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 K5KDU's current licensee, walking backwards.
- Collupy Jr, David MCAgranted 2014-03-03cancelled 2023-01-24
Successor callsigns
Callsigns held now by people who previously held K5KDU.
No current licensee on record previously held this callsign.