Roofing filter with 300 Hz width, IF frequency 9.005 MHz, intended for use in the Yaesu FT-DX10 transceiver.

The FT-DX10 is already equipped with three roofing filters of 12, 3 and 0.5 kHz width. The optional 300 Hz CW FIlter provides even better selectivity in situations of very high band usage, e.g. in a contest or a pileup. The installation is unproblematic and can easily be done by the user himself.