W4RT Electronics OPF-Y-CW-300
Improve your CW and PSK operating experience with the 300 Hz CW filter using factory-fresh Collins Mechanical Filter. Essentially identical to the Yaesu YF-122CN. This filter allows the FT-817(ND), 857(D), 897(D) to perform nicely in the CW and PSK modes. The 300-Hz is often preferred by CW and PSK CONTEST operators. This filter is properly terminated for best performance in your radio. Easy to install. Just remove the cover and set the menu as explained in the FT-817(ND), FT-857(D), & 897(D) Manuals.