RF interference from USB power ports

[sscheuer47]

I have added two USB power ports to supply power to two cameras and they are getting power from battery through a FZ-1. The USB's are causing RF interference.
It was suggested to me that I put a 25 ohm 5 watt resistor on the positive side. Local Radio Shack is going out of business and does not stock. Anyone know where to get this resistor?

[stevedfive]

You should try a RF Ferrite Snap Choke.

[ThreeWheels]

You should try a RF Ferrite Snap Choke.

I have no idea what he's talking about, but I'd bet real money he's right.

[Highwayman2013]

You should try a RF Ferrite Snap Choke.

Sounds like a left handed smoke shifter.

[stevedfive]

Two for $5.99. The magnets eliminate the excessive static that cause the RF interference noise.

[Highwayman2013]

Two for $5.99. The magnets eliminate the excessive static that cause the RF interference noise.

Is that what those things are on some cables. Always learning.

[Cyclist922]

Is that what those things are on some cables. Always learning.

Yep. Ferrite inductors have been a standard way of shielding for years.

[Oldfox]

They look like one of these available on Amazon:

http://www.amazon.com/Movable-Inner-...words=rf+choke

Hope you can follow the link.

Order one for each cable to fit the diameter of the cable.

[markyodo]

Parts Express has been my go to store for audio / video / cabling for years.
Here is your part.
http://www.parts-express.com/25-ohm-...erance--015-25

[finless]

Mouser electronics

www.mouser.com

Now I will add. You don't really say what is getting interference? The cameras?
If so and the 12V run is long (like from front of the Spyder to the back), then chokes or a resistor may not help. You might have to use shielded cable and ground the shielding at both ends as the wire is acting like an antenna.

Bob

[eddieshep999]

I have added two USB power ports to supply power to two cameras and they are getting power from battery through a FZ-1. The USB's are causing RF interference.
It was suggested to me that I put a 25 ohm 5 watt resistor on the positive side. Local Radio Shack is going out of business and does not stock. Anyone know where to get this resistor?

There is a hiss noise and reception is lost until the brake is released
seems to do this with the brake pedal
just tried the same by applying the parking brake using the switch no interference

[finless]

There is a hiss noise and reception is lost until the brake is released
seems to do this with the brake pedal
just tried the same by applying the parking brake using the switch no interference

Parking break does not turn on the break lights.

I would unscrew the right rear speaker box and check the radio antenna ground strap and connection.

Bob

[eddieshep999]

Parking break does not turn on the break lights.

I would unscrew the right rear speaker box and check the radio antenna ground strap and connection.

Bob

Bob

Have done this and all connections look ok and are tight

See Picture

Is anything I could connect in line with Aerial which would block the interference but allow all Radio Stations to work

[finless]

Did you also check that the antenna plugs are mated at the radio?
Pull the cover off over the radio and there is a standard type antenna plug set in there. Pull it apart and clean it inside.
There was a water intrusion fix (service bulletin) a while back that the dealer should have done. It puts heat shrink around that antenna connector so no water gets in it and keeps it from coming loose due to vibration.

Other than that I am stumped. Only thing I can think of is some ground issue for the radio.......

Bob

[PaladinLV]

I would STRONGLY suggest an alternate approach.
RF Choke
Ferrite Isolators
"Magnets"
Etc.

As other riders have suggested.
My personal favorites are Ferrite Isolators or RF Chokes.

AJ

I have added two USB power ports to supply power to two cameras and they are getting power from battery through a FZ-1. The USB's are causing RF interference.
It was suggested to me that I put a 25 ohm 5 watt resistor on the positive side. Local Radio Shack is going out of business and does not stock. Anyone know where to get this resistor?