HF Transceiver RFI/Noise Reduction Kit - 5 Noise Reduction Filters + Coax Noise Filter

Name: Icom IC-7300 Transceiver Deluxe RFI Kit - 5 Noise Reduction Filters + Coax Noise Filter
SKU: RFI-XCVR-STD+NF
Price: 99.95 USD
Availability: InStock

RFI-XCVR-STD+NF

$99.95

In stock

Quantity:

Product Details

MPN: RFI-XCVR-STD+NF

Type: NEW

Country/Region of Manufacture: United States

Filter Power Rating (PEP watts): = Cable Rating

RFI Suppression Range (MHz): 1-300 MHz

# Ferrite Filters: 5

Enclosure Size (inches): n/a

Typical Use:: AC/DC power, RF output, 3 additional I/O lines

BUY THIS KIT NOW TO SOLVE YOUR RFI PROBLEMS! WORKS WITH MANY BRANDS OF HAM/COMMERCIAL HF RADIOS WITH SINGLE ANTENNA INPUT. This kit is an improvement over our standard HF transceiver RFI Kit and now includes our very effective Coax Noise Filter, (CMNF-500-50) to reduce common mode noise picked up by the antenna feed line coax as well as individual filters for the DC power line, and other cables including DIN Plug, Remote/CIV, AMP Send/ALC, and USB. (Note: if you have multiple antenna inputs, use a separate CMNF-500-50 on each HF coax line or a CMNF-500-50VHF for 144 or 450 MHz coax inputs).

This kit will help reduce or eliminate:

1. Radio Frequency Interference (RFI) to electronic devices including audio/video systems, computers, telephones, garage door openers, alarm systems, and home appliances, in your house or your neighbor’s house.

2. RFI from other electronic devices such as switching power supplies, LED and fluorescent lights, battery chargers, Ethernet cables, solar systems, kitchen appliances, and cable/satellite TV systems which generate common mode currents on your radio cables.

3. These filters help cure SWR problems between transceiver and a linear amp and between transceiver and antenna tuner or direct to antenna. The DC power line filter helps keep common mode current out of the power line which could cause interference to other devices connected to the same power source.

These filters use a ferrite core material that is effective in suppressing RFI from transmitters and receivers experiencing a high noise floor in the 1-300 MHz range. DC filter effective for .15-10 MHZ and CMNF-500-50 effective from 1-60 MHz range. Snap on filters effective from 1-300 MHz.

The ferrite split beads and ring filters are easy to use, don’t require modification of the protected equipment and work in almost all cases, even when plug-in filters fail.

Kit Includes a low frequency noise reduction ring filter (works great on DC switching power supplies too!) for AC/DC power, 4 snap on filters (1/2" ID) for I/O cables and the CMNF-500-50 coax noise filter and double male barrel connector for direct attachment to your radio antenna connector. The CMNF-500-50 provides up to 38 dB (6 "S" units) of common mode noise attenuation. Snap on ferrites may be either 4 or 6 sided depending on inventory - they have identical electrical properties..

This Kit features Quick installation - immediate RFI/noise reduction. No radio mods required.

For additional RFI suppression, use a feed line choke (like the MC-1-500 for 500 watts or the MC-1-3000 for powers up to 3KW PEP) at the antenna feed point to suppress common current on the coax feed line during TRANSMIT.

If you use a linear amplifier use a Palomar Engineers Amplifier RFI kit (part# RFI-LA-GAC) for additional RFI interference suppression.

Icom 7300 RFI Kit Flyer Download (not available on eBay)

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Often it is difficult to slip beads on a cable because of a plug or connector. Split beads solve this problem. They come in two halves that fit over the cable. A plastic snap cover holds the two halves together and holds the assembly on the cable.

For RFI use, mix 31 is effective from 1-300 Mhz, mix 43 works from 20-250 Mhz, Mix 61 is for 200-2000 Mhz, and mix 77 favors .1-20 MHz. These frequencies are those of the interfering signal to be eliminated, not the operating frequencies of the equipment to be protected.

Not sure of what sizes you need or solving a RFI problem with devices using multiple size cables? Try the Ferrite Snap On Combo Pack which has sizes from 1/4″ to 3/4″ with either Mix 31 (1-300 MHz) or Mix 61 (200-2000 MHz) or Mix 75 (150 KHz – 10 MHz).

NOW WITH QUANTITY PRICING FOR CLUB , VOLUME PURCHASERS!

Bead dimensions are shown in the picture below and in the table as A, B, C

FAIR RITE 185M CLIP ON FERRITE BEAD SPLIT CORE - Snap On Split Beads

Ferrite Split Bead Dimensions

Application Notes

Application Note for using these Snap On split beads: How Many Chokes do I need?

You can very effectively increase the choking impedance of smaller cable by using a large hole ferrite bead and wrapping the cable through several times. For particularly difficult common mode current/RFI problems you may need a choking impedance as high as 5-10K ohms. Using multiple beads and multiple turns through each bead will give higher impedances up to a point. At higher frequencies, when the number of turns approaches an electrical wavelength, the choke becomes resonant due to stray capacitance and the inductance of the cable and limits the high end impedance values to less than the above table points.

Some example of ways to wrap cable are shown below.

**Ferrite Split Beads with multiple turns of RG-58/59**
FSB-1/4 – 1 turn	FSB-1/2 1 turn	FSB-1/2 Open Shell
FSB-1/2 2 turns	FSB-1/2 3 turns	FSB-1/2 4 turns

—–//—–

More examples of split bead use

20131210 1148191 300x180 - Snap On Split Beads

Ethernet Cable on FSB-1/4

20131210 114800 300x180 - Snap On Split Beads

Ethernet Cable on FSB-1/2 – 3 turns for 9X Impedance good filter for 15-30 mhz between 2K-3K ohms choking Z

Three Effective Radio Interference Filters

**Effective RFI/EMI Chokes**
FSB-1/4 or FSB-1/2 4 turns for 14-50 Mhz 2K-3K Z	FSB-1/2-5 turns for 10-30 Mhz 2K-4.5K choking Z	FT240-43 – 14 turns for 3-14 Mhz or use two FT240-43 for 1.8-10 Mhz

These snap-on chokes are useful for reducing RFI in public address system amplifiers, speaker wires, mic cables, mixer panels, coax cable, telephone wires, computer sound card speakers, dsl/cable connections, remote control heads for ham transceivers (Especially FT-100, FT900, IC-706, IC-7000), AC power cables, DC power cables, home theater cables, video cables, HI Fi cables, guitar amps, linear amp cables, etc.

They are also helpful in suppressing common mode noise/RFI in radio and TV receivers, audio and RF amplifiers. They can also help suppress noise generated by treadmills, exercise equipment, fish tank heaters, oil heater pumps, fluorescent lights, motors, cable modems, DSL modems, computers, and many other electrical devices. Common mode current reduction in computer cables often helps speed up computers.