Tube Feed Line Chokes

Ferrite Ring Combo Pack, FT140 - .9" ID, 6 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz

SKU FRCP-140-6
$21.95
6
$3.65
1
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Ferrite Ring Combo Pack, FT140 - .9" ID, 6 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz
Product Details
Brand: Palor Engineers
UPC: Does not apply
MPN: FRCP-140-6
Type: NEW
Country/Region of Manufacture: United States

The Ferrite Ring Combo Pack is a convenient solution for troubleshooting RFI/EMI from unknown frequencies or multiple frequencies that require multiple suppression mixes. Included in this combo pack are ten 1.4″ OD/.9″ ID ring toroids as follows:

Mix 77 effective from .1-50 MHz including AM Broadcast band – quantity: 2

Mix 43 effective from 25-250 MHz for general purpose – quantity: 2

Mix 61 effective from 200-2000 MHz for cell phone, WIFI, HDTV, Cable TV interference – quantity: 2

The ring toroids are useful for AC/DC common mode choking with multiple turns as shown below

20131210 114716 300x180 - Tube Feed Line Chokes

AC Cable on F-240 Toroid – 7 turns

20150125 103738 300x168 - Tube Feed Line Chokes

DC Cable on F240 – 4 turns

The ring toroids can also be used on coax or signal lines as shown below:

20131222 125533 300x180 - Tube Feed Line Chokes

RG58 12 turns on FT240

20131210 115137 300x180 - Tube Feed Line Chokes

Ethernet Cable on F-240 Toroid – 7 turns

For RFI/EMI wrap as many turns as possible for higher choking (under 30 MHz). For over 30 MHz, 1-3 turns is usually sufficient due the to capacitive effect of multiple turns reducing choking effect.

The rings are also useful for making impedance transformers like 4;1, 9:1, etc.

TUBE feed line chokes/Line Isolators are used to suppress common mode current carried on the outside of the  coax braid which is often responsible for receiver noise and RFI in the receiver/transmitter. These chokes are very useful for suppressing RFI common mode current at the antenna feed point, at 1/4 wavelength intervals along the coax feed line and also at the entrance to the radio station.  They are available with various input and output connectors so as to conveniently connect to standard output connectors already installed on your feed line.

Palomar Engineers TUBE feed line chokes are designed to have 2-5 times more choking impedance over a broader frequency range than competitor units in similar packaging.  Each choke has the choking impedance and effective frequency range on the product label so you can choose the product best suited for your application.