CB hooked up/Engine noise...??

[brew8]

There are really three solutions, one is a good alternator without leaky diodes, check the AC component on the DC with a good voltmeter set to AC should be just a few millivolts, a good battery is like a large capicitor and filters a great deal of noise some weak batteries can enhance the noise because of the increased internal resistance, the last is a good radio that uses an internal voltage regulator that operates the radio at a lower voltage than the input voltage, like 11.5 or 9.6 volts you can also use a voltage regulator that will clip the noise off the DC input to the radio. Lastly be sure you have resistor plugs and carbon spark -plug wires, a newer rotor and dist cap, to limit radiation from the arching causing interference, Cheers, Larry

 

[FJ40_owner]

Bought a "Metra" D/C inline filter from Kragens for $12.
Same company who makes the custom wiring harnesses for various rigs.
Figured, they knew what they were doing.
Well, got home to utilize the last remaining minutes of the daylight during these stupid winter days.
Hooked it up, close to the CB.
Powerline direct from battery, with a fuse block in the middle.
Grounded the filter to the chasis of the radio, as per instructions.
I can honestly say, there was ABSOLUTELY NO difference.
The engine noise coming through strong as ever.
Should be against the law to selll things that simply do not do what they say.
Wonder if the noise is coming through the coax?
What about if I sand the powder coating on my ARB off under the mounting tab for the antenna so as to have direct metal contact with the lower mounting nut?

So...to re-cap, I have tried.

*Power hooked up to ACC switched source.
*Power hooked up to Battery (through aftermarket fuse block)
*Power hooked up to battery (through aftermarket fuse block) w/ inline DC filter.
*All these tried with various grounding options.

Results:

Engine noise still coming through loud and clear.


Do you guys think I should try another radio?

Thanks for all of the input.

Antenna installed correctly?

 

[cruiseroutfit]

There are really three solutions, one is a good alternator without leaky diodes, check the AC component on the DC with a good voltmeter set to AC should be just a few millivolts, a good battery is like a large capicitor and filters a great deal of noise some weak batteries can enhance the noise because of the increased internal resistance, the last is a good radio that uses an internal voltage regulator that operates the radio at a lower voltage than the input voltage, like 11.5 or 9.6 volts you can also use a voltage regulator that will clip the noise off the DC input to the radio. Lastly be sure you have resistor plugs and carbon spark -plug wires, a newer rotor and dist cap, to limit radiation from the arching causing interference, Cheers, Larry

Good tech!