The CDC‑1209 is a radar signal processing unit (PCB/board) produced by JRC (Japan Radio Co., Ltd.), typically used in marine radar systems such as the JMA‑9922 series. It’s one of the internal circuit boards responsible for processing radar return signals within the radar’s main electronics.
The CDC‑1209 unit cleans, filters, and interprets these signals using digital algorithms so meaningful information can be extracted (e.g., target location, strength, and motion).





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