Kurt Sterba’s Korner

Ferrite Ring Combo Pack, FT240 - 1.4" ID, 10 Rings - Mix 31(4), 61(3), 75(3), RFI Range .15-2000 MHz

SKU FRCP-240-10
$119.95
On Sale
List price $139.50
Save 14%
1
Save this product for later
Customer reviews
No reviews yet. Only signed-in customers who bought this product can leave reviews. To leave a review, sign in
Share this product with your friends
Ferrite Ring Combo Pack, FT240 - 1.4" ID, 10 Rings - Mix 31(4), 61(3), 75(3), RFI Range .15-2000 MHz
Product Details
Brand: Palomar Engineers
UPC: Does not apply
MPN: FRCP-240-10
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 2.4″ OD/1.4″ ID ring toroids as follows:

Mix 75 effective from .15-10 MHz including AM Broadcast band – quantity: 3

Mix 31 effective from 1-300 MHz for general purpose – quantity: 4

Mix 61 effective from 200-2000 MHz for cell phone, WIFI, HDTV, Cable TV interference – quantity: 3

Individually wrapped and labeled with effective RFI frequency range for easy identification

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

20131210 114716 300x180 - Kurt Sterba's Korner

AC Cable on F-240 Toroid – 7 turns

20150125 103738 300x168 - Kurt Sterba's Korner

DC Cable on F240 – 4 turns

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

20131222 125533 300x180 - Kurt Sterba's Korner

RG58 12 turns on FT240

20131210 115137 300x180 - Kurt Sterba's Korner

Ethernet Cable on F-240 Toroid – 7 turns

For RFI/EMI wrap as many turns as possible (usually 6-12) for higher choking (under 30 MHz). For over 25-100 MHz, 1-3 turns om Mix 61 is usually sufficient. Chokes can also be cascaded in series to offer a broader frequency range.

Check out EHAM reviews HERE