This RFI kit is specifically designed to suppress interference triggered by today's smart appliances used in the kitchen and household that act as "transmitters" and affect other appliances or radio/TV/Cable audio systems OR these appliances may act as "receiver" of energy from other devices such as ham radio, CB, AM broadcast and other electronic devices in the home. The problem is generally the AC power cable acting as an "antenna" picking up or transmitting signals.
The RFI kit has ferrite filters are selected to eliminate RFI from 1 to 300 MHz and are typically used on the AC power lie of your Washer, Dryer, Microwave, Refrigerator and AC powered Clocks and Lamps. The filters are easy to install, don’t require modification of the protected equipment and work in almost all cases.
What is included in the kit?
The RFI kit contains 3 ring filters (1.4" ID), 1 large snap on (1" ID) and 2 smaller (1/2" ID) snap on filters for clock or lamps. Installation examples are shown in the included manual. Simple, easy to install and effective in almost all conditions.
50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.
50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output. Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.