Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9RDF callsign genealogy
Currently held by DOWNHAM, WALTER L
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 W9RDF's current licensee, walking backwards.
- FLOOD, ROGER DINgranted 2013-03-28cancelled 2014-01-04
Successor callsigns
Callsigns held now by people who previously held W9RDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9RDF, oldest first.
- FLOOD, ROGER D IN2014-01-04 → cancelled 2026-03-07
- DOWNHAM, WALTER L— → cancelled 1998-02-09