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
SELECT A CATEGORY TO EXPLORE
Featured Products
On Sale
Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, SOTA, POTA, VOTA
Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, SOTA, POTA, VOTA
SKU BULLET-2006-100
List price $179.95
Save 33%
$119.95
On Sale
Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-30-20-17-15-12-10-6 meters
Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-30-20-17-15-12-10-6 meters
SKU BULLET-4006-100
List price $189.95
Save 26%
$139.95
On Sale
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 10 Pack
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 10 Pack
SKU FSB31-1/2-10
List price $55.00
Save 9%
$49.95
On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
SKU F240-31-10
List price $100.00
Save 10%
$89.95
On Sale
Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)
Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)
SKU FMSCP-31-10
List price $55.95
Save 11%
$49.95
On Sale
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
SKU FRSCP-31-20
List price $155.00
Save 10%
$139.95
On Sale
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
SKU FSCP-31-22
List price $108.00
Save 12%
$95.00
MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas
MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas
SKU MB-1-500SS
$69.95
On Sale
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
SKU MRSCP-31-17
List price $112.00
Save 15%
$95.00
On Sale
Off Center Fed Dipole Antenna, 20-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Off Center Fed Dipole Antenna, 20-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-OCF2006-500
List price $199.95
Save 30%
$139.95
On Sale
Off Center Fed Dipole Antenna, 40-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Off Center Fed Dipole Antenna, 40-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-OCF4010-500
List price $279.95
Save 46%
$149.95
On Sale
Off Center Fed Dipole Antenna, 80-6 Meters (8 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USA
Off Center Fed Dipole Antenna, 80-6 Meters (8 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-OCF8010-500
List price $359.95
Save 53%
$169.95
RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!
RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!
Suppress Unwanted Noise & RFI
SKU RFI-AS-GEN-2
$129.95
Introductory Price
SIGNALPEN(TM) PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery! Fits in Shirt Pocket!
SIGNALPEN(TM) PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery! Fits in Shirt Pocket!
SKU SIGNALPEN
$49.95
On Sale
ZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
ZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-ZS68006-500
List price $189.95
Save 21%
$149.95
The ring toroids are useful for AC/DC common mode choking with multiple turns as shown below
 AC Cable on F-240 Toroid – 7 turns |
 DC Cable on F240 – 4 turns |
The ring toroids can also be used on coax or signal lines as shown below:
 RG58 12 turns on FT240 |
 Ethernet Cable on F-240 Toroid – 7 turns |
For RFI/EMI wrap as many turns as possible for higher choking (under 30 mHz).