and give 33s. How to I kill the buzz? .
What the hell is "giving 33s?"
Spark plug wires are certainly part of it, but there can be much more.
Is it a high speed "popping" kind of buzz (ignition probably)
or more of a musical whine? (alternator)
Does your big, huge, tremendous CB have a "noise blanker?" I'm not talking about a "noise limiter" I'm talking about a REAL noise blanker
Spark plug wires: You certainly need suppessor wires. Solid wire core wires just won't make it.
Plugs. Even with suppressor wires, sometimes you need to run "resistor" plugs
Make sure there's a capacitor (condenser) on the PLUS side of the coil, with a short wire to ground. Most real parts stores sell them. Usually with a tell-tale part number like RC-1 (radio condenser/ capacitor)
There's a cap in the alternator, but sometimes adding one to the output (stud) helps.
Next, many times grounding the hood helps. Either get some small ground braid straps, or just make up no10 or 12 wires and ground near the firewall, in such a way that there's enough "loop" that you can open the hood. They should not be over a foot or so
The routing of, and connection of the power lead to your radio can help or hinder noise. Usually, hooking right to the battery with a fuse, route the wire away from other wiring--especially ignition, and tie/ fasten the wireing close to the metal of a car for a shielding "ground plane" effect.
Sometimes putting a combo filter cap/ inductor in the power lead helps, and sometimes using heavy coax (RG_eight) ---why does this site turn the figure eight into a graphic?--- for the power lead helps
Placement of the antenna and proper grounding, helps or hurts, too. Make sure you route the coax close to metal ground, and properly terminate it. Putting the antenna, fer' xample, in the hood groove on an L bracket is almost guaranteed to give you noise.
(Loaded antenna, center of roof is probably best)
Believe it or not, in one case years ago, we found that the exhaust system was acting as an antenna and radiating noise into the radio--a "low band" vhf in the 30-50 mhz range.
We had to ground the exhaust in a couple of places.
If this is a pickup, bonding the cab/ bed/ frame together and SOMETIMES even the doors helps. Same as the hood. short flexible straps / wire. You want at least no12 because it lowers inductance.
All sorts of other things in the car can make interferance, including anything with a microprocessor---clock, electronic cruise/ am/ fm radio, engine computer, etc, and brakes and wheel bearings.
(My old 86 Dodge 600 K car used to generate a birdie right on 146.52 in the engine computer)
Frankly, you could not PAY me enough to listen to the crap "on the cb"
