Transceiver RFI Kits

 

Wall Wart RFI Noise Filter Bulk Pack of 10 Filters

RFI-WW-10
$29.95
In stock
1
Product Details
MPN: RFI-WW-10
Type: New
Country/Region of Manufacture: United States
Filter Power Rating (PEP watts): not applicable
RFI Suppression Range (MHz): .1-10 MHz
# Ferrite Filters: 10
Typical Use:: wall wart power supplies - DC side
: 10
: 2.995

A simple ferrite ring filter (OD = 1.14", ID = .748") installed on the DC power cable of a wall wart power supply can help suppress the noise interference to nearby electronic devices by suppressing the fundamental switching frequency (usually under 1 MHz) and thereby suppressing harmonics at higher frequencies. This kit includes 10 filters useful for all types of devices powered by wall wart power supplies including laptop computer, routers, cable modems, wireless phone charges, USB chargers, etc.


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Also make sure you connect a good RF ground to the transceiver ground post.

Note to Flex Radio users:  Use snap on ferrites for firewire cable, speaker cable and mic cable,  Ring ferrites for Antenna output and DC power.

For additional RFI suppression, use a feed line choke at the antenna to suppress common current on the coax feed line – see our store for feed line choke alternatives for use at the antenna.

 

If you use a linear amplifier we have RFI kits for linear amplifiers that help suppress RFI in your shack or in your neighbor’s house.