Radio Static

Old Henry>>>It cost $100.00 so I'm a little hesitant to spring for a new one too quickly.>>>

$100!!! Between that and the cost of all that antifreeze you're leaking, yer gonna go broke! 8^)

Jack E/NJ
 
"I did put the condenser on the generator armature terminal grounded to the generator body as instructed".

Is that a COAXIAL capacitor?

As someone else mentioned, have you tried running the engine with the fan belt off?
 
47COE said:
Varying with engine speed like that makes me think it isn't the regulator. It seems more likely the source is the generator or spark.

You could temporarily disconnect all wires from the generator, or remove the belt driving the generator. That will narrow it down to spark vs. generator.

Tom
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Pete said:
As someone else mentioned, have you tried running the engine with the fan belt off?
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I disconnected both the armature wire and field wire from the generator. Made no difference.

Pete said:
"I did put the condenser on the generator armature terminal grounded to the generator body as instructed". Is that a COAXIAL capacitor?
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If I understand a coaxial capacitor being the one that is wired in the circuit for the current to pass through, no. This is the one that came with all of the resistors in the high tension wire kit. (See posts 18 & 19.)

DSCN1937_zps220d6719.jpg
 
I just had an interesting experience that I think is instructive.
I just took a 20 minute drive with the amp sitting on the seat beside me instead of in the glove box where it has been. At the beginning of the drive there was very little static when I was accelerating then would return when I let up on the gas. After about 15 minutes the static was all but gone with only an occassional pop/click. When I pulled up in the driveway I left the engine on and moved the amp back toward the glove box. The static returned with a passion. So, may have to relocate the amp somewhere else. I've been suspecting that the mechanical temperature gauge in the glove box may have been radiating some of the static signal.
 
Barlea said:
Back when we all used non-resistance plug wires, often all it took to get rid of the ignition noise in the Ford radios was to tie a knot in the coil wire. There was also a black bakelite inline coil resistor that worked well if you didn't know about the knot trick. The coil wire was cut and the wire ends screwed into the resistor. ..B.
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Just installed that resistor in the coil high tension wire. Didn't help.
 
52merc>>>why the temp gauge in the glove box??????????????? >>>

That's because Henry wouldn't know the glovebox temperature unless he has a temperature guage in it. Geez, I thought everybody knew that!

Jack E/NJ
 
good 1 jack!! I don't know but whenever old henry posts something it turns out to be very long winded but I like his picks im now going to install a temp gauge in my g/box so that the sweets I put in there don't melt
 
BILL WZOREK said:
Just wondering if this is something NEW or a new Problem that has raised it's ugly head !!!! :mad:
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I've used this amp for several years with virtually none of the static I now have. It has come since I replaced the brushes and armature in the generator but not immediately after. If this gives any ideas for a cure let me know. I did put the condenser on the generator armature terminal grounded to the generator body as instructed. Didn't help.
 
Is there any arcing in the generator either under load or no load? (Try looking in there in the dark of the night.) Your brushes might be not properly seated or the springs might be too weak? Issues with under cutting (or not) the armature?
 
I would take the Generator out of the loop / the car will run off the battery & see if the noise go's away>>>>>>>>>>>>
 
Old Henry>>>
Originally Posted by Pete
As someone else mentioned, have you tried running the engine with the fan belt off?

I disconnected both the armature wire and field wire from the generator. Made no difference.>>>

Bill---

I don't know if Henry pulled the belt yet. Generators can self energize so unless the belts off, the generator could still be the culprit here.

Jack E/NJ
 
Marv>>>Sounds like one bad plug wire or connection even though it is not missing.>>>

Maybe more than one. Henry, have you looked your engine over in the dark while running? Particularly around the distributor cap. Any obvious salt & moisture buildup anywhere?

Jack E/NJ
 
Jack E/NJ said:
Old Henry>>>
Originally Posted by Pete
As someone else mentioned, have you tried running the engine with the fan belt off?

I disconnected both the armature wire and field wire from the generator. Made no difference.>>>

Bill---

I don't know if Henry pulled the belt yet. Generators can self energize so unless the belts off, the generator could still be the culprit here.

Jack E/NJ
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Jack: yea I think you are right / Should take belt off & remove ALL wires also.
 
Confined areas hold RF noise pretty well. Under the dash is a confined area nearly surrounded by metal. It might be the power wire to the coil from the ignition switch. A ferrite toroid core on the ignition wire might stop ignition noise but I've had to put multiple cores on some power inputs to stop the noise for electric motors. It could be gen noise from the wire to the amp meter too. It's hard to say for sure. Radio antenna locations can be affected by feedback too but the coax is usually shielded but the antenna is not.
 
PeteVS said:
Is there any arcing in the generator either under load or no load? (Try looking in there in the dark of the night.) Your brushes might be not properly seated or the springs might be too weak? Issues with under cutting (or not) the armature?
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BILL WZOREK said:
Jack: yea I think you are right / Should take belt off & remove ALL wires also.
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Jack E/NJ said:
Marv>>>Sounds like one bad plug wire or connection even though it is not missing.>>>

Maybe more than one. Henry, have you looked your engine over in the dark while running? Particularly around the distributor cap. Any obvious salt & moisture buildup anywhere?

Jack E/NJ
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Jack E/NJ said:
Old Henry>>>
Originally Posted by Pete
As someone else mentioned, have you tried running the engine with the fan belt off?

I disconnected both the armature wire and field wire from the generator. Made no difference.>>>

Bill---

I don't know if Henry pulled the belt yet. Generators can self energize so unless the belts off, the generator could still be the culprit here.

Jack E/NJ
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I loosened the belt so that the generator didn't turn and disconnected the armature and field wires. No improvement. So, it appears not to be coming from the generator or voltage regulator. Thanks for the ideas anyway.
 
Old Henry>>>I loosened the belt so that the generator didn't turn and disconnected the armature and field wires. No improvement. So, it appears not to be coming from the generator or voltage regulator. Thanks for the ideas anyway. >>>

It'll be dark soon so you can check for fireworks under the hood in other places. 8^)

Jack E/NJ
 
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