I just installed a Cobra handheld CB with a firestick antenna behind the left driver's window.I've notice a very large amount of RF noise when running the generator.Anyone experience this and can tell me how can I eliminate the RF Noise?

I am no electical engineer but I'd think about building a rough Faraday cage out of metal window screen, the fine mesh stuff not hardware cloth.

A Faraday shield could help, but a good ground connection woouldn't hurt, either.

With an inverter (not a generator) the idea was to use a "chassis ground" to the RV frame, separate from the input DC pos and neg wires from the battery (but battery is itself neg grounded to frame--never mind that!)Another trick is/was to braid the pos and neg input wiree to the inverter to cancel out their effects.So--with the generator running 120v in the rig to run the CB radio, what is the actual set-up? Is there an inverter involved? Any DC where you can braid the pos and neg wires? The radio must be DC? Is it grounded to frame?

Assuming you mean audio noise you can hear in the CB speakerWhat sound does it make60Hz hum coming from the 120V lines in the wallFiltered DC hum from the power converter getting in thru the 12v line used to power CBOr3600rpm spark plug noiseYou don't hear rf interference, RF interference will block / blanket your signal and dampen/reduce what you hearEMF electromagnetic interference does not have to be in the Radio Frequency spectrum, it just has to be strong enough for circuits to pickup and amplify in the audio outputOur resident HAMS will probably be more helpfulThe best way to know what to do to block interference, is to know what the interference noise frequency is

Turn the CB off when you run the generator, and turn the generator off when you're using the CB.

Generator RF Noise | Good Sam Community

BFL13
Explorer II
Jan 05, 2020
With an inverter (not a generator) the idea was to use a "chassis ground" to the RV frame, separate from the input DC pos and neg wires from the battery (but battery is itself neg grounded to frame--never mind that!)

Another trick is/was to braid the pos and neg input wiree to the inverter to cancel out their effects.

So--with the generator running 120v in the rig to run the CB radio, what is the actual set-up? Is there an inverter involved? Any DC where you can braid the pos and neg wires? The radio must be DC? Is it grounded to frame?
Gonzo42
Explorer
Jan 05, 2020
A Faraday shield could help, but a good ground connection woouldn't hurt, either.
agesilaus
Explorer III
Jan 05, 2020
I am no electical engineer but I'd think about building a rough Faraday cage out of metal window screen, the fine mesh stuff not hardware cloth.

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