AM radio static

super99

Well-known Member
I put an older fender mount radio on my gas Oliver 1655.The static is bad at all engine speeds. Is there anything I can add to cut the static? In the 60’s and 70’s radios came with a round resistor? That you cut the coil wire and screwed it into the wire to cut the static. Are these still available? You can hear the radio but the static is annoying! I tried adding a condenser to the coil but it didn’t help.
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Just wondering if u have the condenser on the correct terminal. I remember them being on the coil for radio interference but don’t remember which side it was hooked too
 
I put an older fender mount radio on my gas Oliver 1655.The static is bad at all engine speeds. Is there anything I can add to cut the static? In the 60’s and 70’s radios came with a round resistor? That you cut the coil wire and screwed it into the wire to cut the static. Are these still available? You can hear the radio but the static is annoying! I tried adding a condenser to the coil but it didn’t help.View attachment 78638View attachment 78639
Search Radio Noise Capacitor
 
Just wondering if u have the condenser on the correct terminal. I remember them being on the coil for radio interference but don’t remember which side it was hooked too
Suppression capacitor would connect to the ignition switch side of the coil. To me, it appears the O.P. has connected it to the distributor side of the coil.

In theory, that will not be good for breaker point life.

I'm not gonna hold my breath that swapping it to the other side us gonna help with the static, tho.
 
I've used ferrite beads with some success. They can be used in various applications to reduce static. Antenna cables, power wires etc. Lots of info on the web about them.
 
Suppression capacitor would connect to the ignition switch side of the coil. To me, it appears the O.P. has connected it to the distributor side of the coil.

In theory, that will not be good for breaker point life.

I'm not gonna hold my breath that swapping it to the other side us gonna help with the static, tho.
Yes I figured it goes to the ignition side. Also. Carbon core wires are of help. I remember on the older vehicles you could hear the plugs firing On the radio. Didn’t notice any point trouble. 🤷🏻‍♂️
 
Resistor plugs , resistor wires or wound suppression wires .
Alternators sometimes need a capacitor .
No idea what the tinkering with the exterior capacitor on the coil is supposed to accomplish .
Moving the radio or the Antenna a few inches can make a difference .
 
Either the "noise" is in coming into the radio on the power wire, or the antenna is picking it up. Does the noise have a linear increase in RPM, or does it have it's own RPM or rhythm? Do you get a pop or static when turning on lights, honking horn or using other electrical loads? Moving the antenna as far away from the noise (engine?) as possible, and installing a noise filter to the radio might help.

The two noise filters I've used on radio equipment are the type that plugs inline with the cable (coax). Ferrite chokes are the other, they are cheap and can be used on different applications. Depending on the size of the ferrite choke, it's ok to loop the wire and clip over the doubled wire, you want the choke tight against the wire, also it will not hurt to use multiple chokes on the same wire .
 
I installed a new radio in my Deere 4440 this spring. Replaced the factory radio with a Pioneer. Static was bad and seemed to get worse after a few minutes. Went back and read the instructions that came with the radio. It said to run a separate ground wire from a good known ground on the tractor (a good piece of metal - used the cab frame above the headliner) to the radio. I can't remember if there was a special wire on the radio for this or just to the metal frame of the radio. Static disappeared.
 
Either the "noise" is in coming into the radio on the power wire, or the antenna is picking it up. Does the noise have a linear increase in RPM, or does it have it's own RPM or rhythm? Do you get a pop or static when turning on lights, honking horn or using other electrical loads? Moving the antenna as far away from the noise (engine?) as possible, and installing a noise filter to the radio might help.

The two noise filters I've used on radio equipment are the type that plugs inline with the cable (coax). Ferrite chokes are the other, they are cheap and can be used on different applications. Depending on the size of the ferrite choke, it's ok to loop the wire and clip over the doubled wire, you want the choke tight against the wire, also it will not hurt to use multiple chokes on the same wire .
Seems to come from the ignition, increases with engine speed.
 
I drove an IH truck with a fiberglass hood and the noise was bad-so I laid a steel screen over the motor-covered it from one manifold to the other --I would think just the one side on Your oliver should improve it a lot . If You have a long piece cover the engine completely.
 
Try installing a shielded power wire to the Radio, take a foot or two of coax, hook the positive wire to the center conductor, hook the negative wire to the outer shielding (woven wire under outer jacket) use this in between radio and the supply and ground to the tractor, have done this on many vehicles where either alternator noise or ignition noise was coming through into my radio or CB, never had a fail!
 
If everything fails, get a bluetooth speaker or headphones or ear plugs and listen to your favorite station on your phone. Most stations have their own app or go through tunein or iheart.

If you are like me then you don't like headphones on your head or expensive ear buds that will fall out and get lost. I'd like to find an old fender mount radio for the barn.
 
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