1、Using the Murata CFJ455K filter as the core component, the center frequency is 455K and the bandwidth is 7K.<br> 2、It is suitable for use in SSB mode. The noise is reduced under SSB, the sound discriminability is increased, and the voice has no obvious tone change.<br> 3、The imported filter is used with a 1%-precision chip component. After long-term use test, the filter works stably and the effect is obvious.<br> 4、There is an identification circuit on the filter that identifies which filter is plugged into the machine.<br> 5、A typical 1K filter can display 500 on the screen, and a 7k filter displays 3 on the screen, which is intuitive. Of course, you can also let it display FIL1 FIL<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store