It is listed as a station call sign (e.g., CJDV Drumheller) in vintage radio and electronics manuals from the 1960s.
The string "CJDV" appears in specific historical or technical archival lists: CJDV rar
The letter sequence sometimes appears in encrypted or encoded text within SEC EDGAR filings . It is listed as a station call sign (e
Official resources like the Review of guidelines for prevention of CJD focus on safety and transmission in medical settings. CJDV rar