• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Radio Shack noise filter

Moleculo

Ham Radio Nerd
Apr 14, 2002
9,194
1,674
283
I was at radio shack the other day, and i saw a new item they've started carying. It's a 10 amp inline noise filter for cb's, radios, etc. It was cheap enough ($14), so I picked one up and went home to install it. I put it under my dash, as close to the radio as I could get it. I was fairly pleased with the results. It cleaned up a lot of the motor noise I was getting from my Jeep. It also got rid of the annoying turn signal clicking. I still have a very slight alternator whine, but it's not bad enough to worry about. They also have a 20amp one, which is quite a bit bigger.



Thought I'd pass that along....





Moleculo


</p>
 
  • Like
Reactions: Groundhog KSS-2012

There's a good chance a lot of what you are hearing is the fuel pump. My jeep made a lotta racket 'till the fuel pump went out. After I changed it things got a whole lot quieter.


St Nick

Cobra 2000 GTL wi/a

200w Homebuilt Kicker

Antron 99



Limited Edition Cobra 29

With Wilson 1000</p>
 
Tommy, I apoligize for what I posted, you were right it was way off base. Some people, (like me<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> ), take what you say and gather you think you are a CB god. We all say and do things differently, so I was wrong and admit it. I hope you accept my apology. I am man enough to admit my mistakes and move on. Take care and have a great day. <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/happy.gif ALT=":D">

fasteddy<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">


fasteddysig.gif


</p>Edited by: <A HREF=http://pub86.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=fasteddy@worldwidecbradioclub>fasteddy</A> at: 4/4/03 7:30:27 am
 
now,now gentlemen! let's be nice OK. i see where fast eddy

is comin from tommy2watt.i had that problem,so i ran directly

to the battery w/no improvement whatsoever! talk about some

major dissappointment! i was gonna install a filter,but never

got around to it.this was in a spare(back-up)vehicle anyway!

catch me later,from the land of the worthless nut,

SLIM


slimsig.gif
</p>
 
I already had all my stuff run straight to the battery. Part of the problem is that the jeeps are just plain noisy...and I have heard on Jeep forums that the fuel pump is part of the problem. Unfortunately, you gotta drop the gas tank to get to it. I've also inspected a lot of the body and frame grounds, and added a few of my own. In addition, I put a big CAP in between the power leads to act as a shunt right before the power enters the cab to help filter out ignition noise. The extra Rat Shack power filter did help cut down some noise coming from electrical components in the dash as well. Every little bit helps....





Moleculo


</p>
 
Moleclulo, I own a '90 Ford pickemup. This four wheeler puts out more engine, fuel pump, you name it noise of any vehicle I have owned. I have tried running straight to the battery (to no avail). I had a bud of mine install a filter inside the radio (to no avail). The noise is almost unbearable, the noise to signal ratio is worse than better. I haven't tried any of the inline filters like the one you just purchased from Radio Shack. Guess I'll have to make a trip to the Shack and give one a try.

How much of a noticeable difference did the filter really make?

Do you think it was worth the money? Do you know if the 20a filter would cut more of the noise than the 10a?



Thanks, Hossless


</p>
 
I noticed *some* difference...it didn't eliminate it all. I don't think you're going to notice any difference in reduction between the 10a or 20a one...you just need the right one depending on how many amps your radio draws. It was pretty inexpensive, so it's probably worth a shot. Or try Maco's homemade filter....





Moleculo


</p>
 
Hello all, I built the filter Maco recommended, and it didn't work, (well, I'm sure it worked-but not in my case). Why you ask? I now think the noise coming from the internal fuel pumps is being picked up by my antenna. After trying the filter connected to the power cord, (and it didn't do anything), I removed the antenna with the engine running and virtually all the noise was eliminated. Does this make sense to any of you???<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/embarassed.gif ALT=":eek:">



Thanks, Hossless<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/ohwell.gif ALT=":">


</p>
 
Re: Radio Shack noise filter HEY BUTTFUZZ!!

AudioShockwave, I'll do some digging. I know this subject has been discussed before on this forum. A local around here just told me Ford had a recall regarding the fuel pump noise interference. I guess I'll give Ford a call.



Thanks, Hossless


</p>
 
Re: Radio Shack noise filter HEY BUTTFUZZ!!

Sorry, but this is long....



> 99-12. Publication Date: JUNE 7, 1999

> Article No. 99-12-9

>

> Fuel System - Fuel Pump "Whining"/ Buzzing" Noise

> Comes Through Entertainment Or Two-Way Radio Speaker

>

> Radio - Entertainment Or Two-Way Communication -

> "Whining"/"Buzzing Noise in Speakers Caused By Fuel

> Pump

>

> Noise - "Whining"/Buzzing" - Comes Through Speakers Of

> Entertainment Or Two-Way Radio

> FORD:

>

> 1990-93 TEMPO

> 1990-97 PROBE, THUNDERBIRD

> 1990-99 CROWN VICTORIA, ESCORT, MUSTANG, TAURUS

> 1997-99 CONTOUR

>

> LINCOLN-MERCURY:

>

> 1990-92 MARK VII

> 1990-93 TOPAZ

> 1990-97 COUGAR

> 1990-99 CONTINENTAL, GRAND MARQUIS, SABLE, TOWN CAR

> 1991-99 TRACER

> 1997-98 MARK VIII

> 1997-99 MYSTIQUE

> 1999 COUGAR

>

> LIGHT TRUCK:

>

> 1990 BRONCO II

> 1990-96 BRONCO

> 1990-97 AEROSTAR, F SUPER DUTY, F-250 HD, F-350

> 1990-99 ECONOLINE, F-150, F-250 LD, RANGER

> 1991-99 EXPLORER

> 1993-99 VILLAGER

> 1997-99 EXPEDITION, MOUNTAINEER, WINDSTAR

> 1998-99 NAVIGATOR

> 1999 SUPER DUTY F SERIES

>

> This TSB article is being republished in its entirety

> to include 1997-1999 model year vehicles.

>

> ISSUE:

>

> A "whining"/"buzzing" noise in the speakers of the

> entertainment radio or two-way radio on vehicles with

> an in-tank electric fuel pump may be caused by

> electrical noise from the fuel pump.

>

> ACTION:

>

> Install an electronic noise Radio Frequency

> Interference (RFI) filter (F1PZ-18B925-A) on the fuel

> pump inside the fuel tank. Refer to the following Test

> Procedure to confirm that the concern exists, then

> refer to the Service Procedure for repair details.

>

> NOTE:

>

> SOME LIGHT TRUCKS REQUIRE ONE (1) RFI FILTER FOR EACH

> IN-TANK ELECTRIC FUEL PUMP ON MULTI TANK VEHICLES.

>

> NOTE:

>

> THIS TSB DOES NOT INCLUDE TAURUS FLEIBLE FUEL VEHICLES

> (FFVs) OR 1999 RANGER 3.0

>

> TEST PROCEDURE

>

> Fuel pump radio noise is relatively constant and

> changes only slightly with vehicle speed. If the

> frequency of the noise varies or the noise comes and

> goes with the vehicle speed, then it is not the fuel

> pump and this fix will not be effective. The following

> procedure will help determine if the fuel pump is the

> cause of the radio noise:

>

> Turn on the radio before the key is turned on

> (assuming the radio will operate without the ignition

> key - you may need to put the ignition key in the

> Accessory position).

> Turn the ignition key to the Run position (do not

> start the engine).

> The fuel pump should run for about 1 second with the

> key in the Run position with the engine not running.

> Listen for noise in the radio. If noise is present

> while the pump is running and stops when the pump

> stops, then the noise is being generated by the pump

> and this procedure should help.

> SERVICE PROCEDURE

>

> Remove the fuel pump sender assembly from the fuel

> tank. Refer to the appropriate Service Manual, Section

> 24-35 for cars/light trucks and Section 10-01 for

> compact trucks, for removal procedure.

> On vehicles without a fuel delivery module, remove the

> negative and positive connectors from the fuel pump,

> <<Figure 1>>.

> a.Cut the wires to the fuel pump 76mm (3") from the

> flange of the fuel pump and discard the wires.

>

> b.Connect the RFI filter connectors to the spade

> terminal on the fuel pump.

>

> c.Cut and solder both the red and black wires of the

> RFI filter to the red and black wires of the flange.

> Use Heat shrink tubing (F5AZ-14A099-AA) over the

> solder connections.

>

>

> NOTE:

>

> HEAT SHRINK TUBING MUST BE USED OVER ALL SOLDERED

> CONNECTIONS MADE PRIOR TO THIS TSB. USE SUFFICIENT

> TUBING (ABOUT 50mm (2") OF THE SPECIFIELD TYPE TO

> ENTIRELY COVER EACH SOLDERED CONNECTION AND SHRINK

> APPROPRIATELY TO PREVENT EXPOSURE OF THE CONNECTIONS.

>

> NOTE:

>

> FOR SOME VEHICLES WITH EXTREMELY LONG FUEL PUMP GROUND

> WIRE CIRCUITS, IT MAY BE NECESSARY TO SHORTEN THE

> GROUND WIRE TO A POINT CLOSE TO THE FUEL TANK. IF THE

> GROUND IS MOVED, BE SURE IT IS SECURE AND PROTECTED

> FROM CORROSION SINCE IT IS THE OPERATING GROUND FOR

> THE PUMP. CHECK SERVICE LITERATURE (EVTM, etc.) FOR

> GROUND LOCATIONS.

>

> WARNING;

>

> ALL SOLDERING AND HEAT SHRINKING MUST BE COMPLETED

> AWAY FROM THE FUEL TANK AREA. USE A SOLDERING IRON

> ONLY FOR SOLDERING AND HEAT GUN ONLY FOR APPLYING

> SHRINK TUBING.




Wm. Warlock "71 and the long limousine in Va"





Rollingradios@aol.com





Nat. Rep for XForce/Magna Force Customer Service and Support



</p>
 
Re: Radio Shack noise filter HEY BUTTFUZZ!!

Thanks RR, unfortunately my year/model pickup isn't listed. I'll give Ford a try anyway. Man, you are good!



Hossless


</p>
 
Re: Radio Shack noise filter HEY BUTTFUZZ!!

Called Ford the other day, and they said it was a service bulletin, not a recall. So I'll have to fork out around $100 bucks when I'm ready to have it done. The guy I spoke to said it WOULD take care of the fuel pump noise...



Hossless<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/grin.gif ALT=" >D"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/mad.gif ALT=">:"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/wink.gif ALT=";)">


</p>
 
Re: Radio Shack noise filter HEY BUTTFUZZ!!

I guess that's what TSB (technical service bulletin) stands for.<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/sick.gif ALT=":x">


</p>
 

dxChat
Help Users
  • No one is chatting at the moment.
  • dxBot:
    Tucker442 has left the room.
  • @ BJ radionut:
    LIVE 10:00 AM EST :cool:
  • @ Charles Edwards:
    I'm looking for factory settings 1 through 59 for a AT 5555 n2 or AT500 M2 I only wrote down half the values feel like a idiot I need help will be appreciated