RF interference from USB power ports

[sscheuer47]

To be clear, the magnets are attached to the radio antenna wire? Is that correct? Perhaps adding to the USB cable also will help?

I am using a 'Panel Tapp' Usb power port located below the left passenger hand rail. The power and ground wires run to a FZ1 located front left of bike. The Usb cable runs along the rear seatback up to the camera located on top of the truck lid.

I replaced the OEM antenna with a hidden antenna located inside the rear panel just below the rear truck handle opener.

Good reception on radio until camera USB cable is plugged in providing power to the camera, then some static with lower volume. No problrms with camera.

[sscheuer47]

Thanks to all who have responded.

Some quick research on 'RF Ferrite Snap Choke' shows that not only the size of the hole for the cable but also there are three types.

Have seen these on computer type cables.

Question: Would the same type be used for the power cable, USB cable as well as the radio antenna cable on the RT?

[sscheuer47]

Chokes and resistors ordered from above recommended sites. Also ordered a PDM60. All work will have to wait until after we get back from Spyderfest.

[Phil]

A lot of the USB and other power supplies use what is called a 'chopper' circuit to take the 12vdc down to 5vdc. They call it a chopper because it chops out parts of the 12vdc, and reassembles it to make the 5vdc (trust me). They work well, but some can put our RF interference like you are seeing. The resister simply adds 'load' to the circuit thus dampening the chop. Somewhat.

The 'magnets' you are talking about are not really magnets. They are ferrite cores (aka chokes). They come in snap on versions and doughnut type. If you are trying to suppress RF noise, you would put these on anything EXCEPT the antenna! The antenna WANTS to receive RF. You can put them on the USB cable, on 12vdc wires, etc. The ferrite cores act like high frequency absorbers.

There's another old trick we used in broadcast and that was to tie knots in wires when we couldn't get our hands on the ferrite cores right away.

[eddieshep999]

I am getting Radio interference on My Spyder Radio when I apply apply the brake otherwise it's fine
I have the HMT brake light fitted and the front fender LED's which are both running lights and function as an extra brake lights
what do I need to do/fit to stop this happenig

[finless]

When you say radio interference, do you mean it is interfering with radio station reception? Or some form of noise coming out of the speakers?

Bob

[eddieshep999]

I am getting Radio interference on My Spyder Radio when I apply apply the brake otherwise it's fine
I have the HMT brake light fitted and the front fender LED's which are both running lights and function as an extra brake lights
what do I need to do/fit to stop this happenig

UPDATE

Took my Spyder RT SE6 2015 Model for the 3,000 Service explained the radio problem and they sorted it out
It was the Sidecase LED's they had been set up as both running lights & brake lights via an interface. It was the braking function that was causing the interference, they changed it so the Sidecase LED,s would only function as running lights and Radio reception is now working without interference when the brakes are operated I am happy with the outcome

[Peter Aawen]

I know it's a bit odd for this to occur, but are you sure the interference wasn't there before you fitted the LED's?? My 2013 RT has exhibited similar radio interference whenever the radio has been tuned to any AM station since delivery; no LED's at all; earths, etc all present, correct, & sound.... but whenever I press the brake pedal, harsh static from the radio, ONLY if it's tuned to an AM station?!?