DSL/Cable Modem/Router/Ethernet/Internet RFI Kit - 3 Filters

Store/RFI Solution Kits/Smart Home RFI Solutions/Computer/Network RFI Solutions

Product Details

MPN: RFI-ROUTER

Type: New

Country/Region of Manufacture: United States

Filter Power Rating (PEP watts): n/a

RFI Suppression Range (MHz): 1-300 MHz

# Ferrite Filters: 3 or 5 depending on model

Enclosure Size (inches): n/a

Typical Use:: 1-2 turns on all I/O cables

Use for DSL/cable modems, routers, access points, repeaters, Ethernet switches, etc.

Name: DSL/Cable Modem/Router/Ethernet/Internet RFI Kit - 3 Filters
Brand: Palomar Engineers
SKU: RFI-ROUTER-4
Price: 19.95 USD
Availability: InStock

The RFI-ROUTER-4 kit is meant to be used with a DSL Modem/Router with incoming DSL signal, up to 4 Ethernet lines and a single power DC power supply line coming into the device.Included are one snap on ferrite (3/4” hole) and two (3/4” hole) snap on split ferrite beads for the Ethernet outputs (2 per snap on using multiple turns for each cable). The additional 3/4" snap on is for the power supply line. The RFI-ROUTER-8 kit is identical but has 2 additional ferrite snap on for up to 4 additional ports,

Useful for all brands of computer equipment.

When considering solutions for AM broadcast (550 Khz – 1.8 Mhz) you should consider Mix 77 ferrites available in a variety of shapes and sizes. Choose a size to give the maximum number of turns of the affected wire or cable.

AM broadcast transmits on a low frequency with large antennas. Consequently it takes a large antenna to receive the signals. Typical “antennas” are AC house wiring, phone lines, long satellite or cable TV cables, DSL/CAT5 lines running between rooms, etc. The device wires that connect to these “antennas” need to be choked with as many turns through the ferrite as possible. Some installation examples are shown below on this page.

For AC/ DC power cords and coax cables the F240-77 (2.4″ OD, 1.4″ ID) “Donut” toroid is the most popular. Also available are smaller toroid donuts and Mix 77 beads. Shown below is a graph with 8, 10, and 12 turns through the toroid – obviously more turns has higher choking impedance. Mix 77 toroid products are HERE and Mix 77 small beads (for small wires) are HERE

F240 77 Turns Comparison 1024x648 - AM Broadcast RFI Kits

F240-77 Turns Comparison from .1 – 8.1 Mhz

Shown below is a graph of frequency response verses choking magnitude for a F240-77 in the AM Broadcast band for a 12 turn coil around the toroid. (Same info as above but different frequency range).