Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ADV callsign genealogy
Currently held by Krebs, Douglas R
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 K5ADV's current licensee, walking backwards.
- Krebs, Douglas RTXgranted 2007-09-19cancelled 2010-10-09
Successor callsigns
Callsigns held now by people who previously held K5ADV.
No current licensee on record previously held this callsign.