| Author |
Message |
    
Bronzepony
Member
Username: Bronzepony
Post Number: 88
Registered: 12-2005
| | Posted on Tuesday, November 06, 2007 - 7:39 am: | 
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We have a 2000 ford diesel with a general lee installed no noise wih key off 2s with key on 5s with truck running. I have grounded everything. have tried rerouting coax antenna is wilson 1000 roof mount. tried a little will also. power comes from batt. tried a diff. alt. what about inline power filter? When I unscrew the ant. off mount or unscrew coax I lose noise. |
Tech808
Moderator
Username: Tech808
Post Number: 14624
Registered: 8-2002
| | Posted on Tuesday, November 06, 2007 - 8:59 am: |
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Simple test,
NOTE!
The following information is posted with permisson from Sam Lewis / Magnum International for the  MAGNUM XLF-20C & MAGNUM XLF-20M Common-Mode Filtercord.
#1 ~ Start the vehicle and listen carefully to your radios receiver noting all interference and noises. Start and stop the various DC switches and motors in the vehicle ie: windshield wipers, turn signals, etc.
#2 ~ Unscrew the antenna from the back of the radio and replace it with a dummy load.
#3 ~ Repeat step #1 and compare noise/interference level's.
#4 ~ Any noise or interference that remains after the antenna system has been replaced with a dummy load, will be reduced or eliminated by using the XLF-20C.
Hope this help's,
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#001 ~ CVC#002
Tech808@copperelectronics.com
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Bronzepony
Member
Username: Bronzepony
Post Number: 89
Registered: 12-2005
| | Posted on Tuesday, November 06, 2007 - 7:56 pm: |
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what is a xlf-20c |
Bronzepony
Member
Username: Bronzepony
Post Number: 90
Registered: 12-2005
| | Posted on Wednesday, November 07, 2007 - 8:05 am: |
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Where can I get one |
Tech808
Moderator
Username: Tech808
Post Number: 14627
Registered: 8-2002
| | Posted on Wednesday, November 07, 2007 - 1:29 pm: |
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Bronzepony,
Copper Electronics should have the MAGNUM XLF-20C & XLF-20M Common-Mode Filtercords ™ available and in stock by next week.
The MAGNUM XLF-20C & XLF-20M Common-Mode Filtercords ™ are rated for 20 Amps or less.
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#001 ~ CVC#002
Tech808@copperelectronics.com
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Bronzepony
Member
Username: Bronzepony
Post Number: 91
Registered: 12-2005
| | Posted on Wednesday, November 07, 2007 - 9:59 pm: |
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Thanks sounds like it may fix my problem |
Hatchet
Intermediate Member
Username: Hatchet
Post Number: 138
Registered: 7-2004
| | Posted on Saturday, November 10, 2007 - 1:44 pm: |
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The power cord wont fix your problem. The noise you are hearing is coming in from the antenna, not the power source. Its likely injector noise and you will need to deal with it at the source |
Bronzepony
Member
Username: Bronzepony
Post Number: 92
Registered: 12-2005
| | Posted on Sunday, November 11, 2007 - 11:23 am: |
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ok how do i do that |
Hatchet
Intermediate Member
Username: Hatchet
Post Number: 139
Registered: 7-2004
| | Posted on Sunday, November 11, 2007 - 4:35 pm: |
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Start here. I know this deals mainly with the 6 liter but it may also work on your 7.3. If it does not help, you may have to add a RF choke to each power wire on your injectors. I cant guarantee that is where the noise is coming from but it is the most likely source. Your injection pump could also generate RF noise.
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Bronzepony
Member
Username: Bronzepony
Post Number: 94
Registered: 12-2005
| | Posted on Monday, November 12, 2007 - 11:53 pm: |
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I guess I miss something start where? |
Bronzepony
Member
Username: Bronzepony
Post Number: 95
Registered: 12-2005
| | Posted on Saturday, November 17, 2007 - 10:56 pm: |
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well tried the dumby load and had no noise. |
Kabar
Member
Username: Kabar
Post Number: 52
Registered: 6-2003
| | Posted on Sunday, November 18, 2007 - 8:10 am: |
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Electric fuel pumps on Ford trucks can make noise also.
With key in ignition switch turn the key just enough to apply current but not turn the starter.
If you have electric fuel pump noise you will hear it very quickly.You will need to listen just after you apply current as the noise will be quick but not continous as the current reaches the electric fuel pump.
Hope this may help. |
Bronzepony
Member
Username: Bronzepony
Post Number: 96
Registered: 12-2005
| | Posted on Monday, November 19, 2007 - 8:14 am: |
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I am sure I have fuel pump noise. What can you do about it? |
Tech808
Moderator
Username: Tech808
Post Number: 14689
Registered: 8-2002
| | Posted on Monday, November 19, 2007 - 8:45 am: |
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Bronzepony,
Try contacting you local ford dealer and ask for any Tech/Service Bulletins / tips on mounting CB/Radios in your vehicle.
Hope this help's,
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#001 ~ CVC#002
Tech808@copperelectronics.com
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Bronzepony
Member
Username: Bronzepony
Post Number: 97
Registered: 12-2005
| | Posted on Wednesday, November 21, 2007 - 8:43 pm: |
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Ford dealer no help. I have now grounded the body of the electric fuel pump no help. 6s of noise. any more ideas? I pulled wifes tahoe next to it and had no noise in tahoe but when I ran coax from her wilson to my radio I had noise?? |
Capt205
Intermediate Member
Username: Capt205
Post Number: 176
Registered: 5-2005
| | Posted on Sunday, November 25, 2007 - 12:47 pm: |
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I have a 2003 F350 with the 7.3 diesel. I was able to knock the noise way down by placeing snap on ferrites on the wires coming off of the alternator, and on the coax right at the radio.
That, and a whole lot of grounding and bonding.
I have a Wilson 5000 roof mount.
I might try looking for the injector leads to see if it helps.
"In God we trust. Everyone else, keep your hands where I can see them".
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The_horseman
New member
Username: The_horseman
Post Number: 5
Registered: 11-2007
| | Posted on Sunday, November 25, 2007 - 2:07 pm: |
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Check this link:
www.sanantoniohams.org/tips/whine.htm
building one of these and installing it should remedy your noise. |
