W4RT Electronics OPF-CW
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One-Plug Filter - CW Filter for the FT-817, FT-857, and FT-897
- 7-pole Collins Mechanical Filter identical in performance to the Yaesu YF-122C optional 500-Hz CW filter
- Installs just like the Yaesu filter does
- Filter unit contains the coding for the FT-857 or FT-897 to recognize it as a 500 Hz CW filter
- Only real difference is the price!
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