CB Radio Interference - Ranger-Forums - The Ultimate Ford Ranger Resource


Audio & Video Tech General discussion of audio and video for the Ford Ranger.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-17-2008
99_NWRanger's Avatar
Member
Thread Starter
 
Join Date: Apr 2008
Location: WA / Mountain Home, ID
Posts: 331
CB Radio Interference

I've had my cb radio in for a little over 4 months. What I've been noticing more lately is I've been getting a lot of engine interference when it on. My cb radio model is in my signature.

I'm just wondering what can I do to eliminate that interference so I get a clearer signal because whenever I'm talking to someone if they're pretty far away I can talk to them when the truck is off but when its on interference won't let me hear them. Any help would be appreciated.
Reply With Quote
  #2  
Old 07-17-2008
madman4049's Avatar
Member
 
Join Date: May 2007
Location: Surprise AZ
Posts: 351
Is your CB hardwired or tapped to something else? Also where is your antenna? Don't think it would matter a whole lot for recieving but did you have it tuned for SWR?
Reply With Quote
  #3  
Old 07-17-2008
99_NWRanger's Avatar
Member
Thread Starter
 
Join Date: Apr 2008
Location: WA / Mountain Home, ID
Posts: 331
The cb is hardwired directly to the battery. Antenna is on the drivers side of the hood. And it has not been tuned.
Reply With Quote
  #4  
Old 07-17-2008
htjunkie's Avatar
Member
 
Join Date: Apr 2007
Location: The Lone Star State
Posts: 1,286
Sounds to me like you need a better ground. Having your SWR's off won't make you have engine noise.
Reply With Quote
  #5  
Old 07-17-2008
04blackedge's Avatar
RF Veteran
iTrader: (13)
 
Join Date: Jan 2007
Location: Durham, NC
Posts: 23,426
Try grounding it at the battery. Get it tuned, you'll gain a lot of performance with a properly tuned system.
Reply With Quote
  #6  
Old 07-18-2008
99_NWRanger's Avatar
Member
Thread Starter
 
Join Date: Apr 2008
Location: WA / Mountain Home, ID
Posts: 331
Where can I take it to get tuned? How much does it cost? This might sound retarded but what exactly do they do when they tune it?
Reply With Quote
  #7  
Old 07-18-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
I suggest a better cb with better filtering, like a 29. Don't think you can tune a 19dx.



You need the shortest ground possible. My 29LTDbc has a 3" ground. Also, how is your coax routed? No coiling. How is your coax grounded? Post some pics please. I wanna see your setup.

There are filters avalible for both the power wire and the antenna. Usually about $15. I still need to try mine out...damn hid's. One way to tell where the noise is coming into the radio, is while the radio is on, disconnect the coax off the back. if the noise goes away, your interference is coming through the antenna. If the noise stays, the interference is coming through the power wire. You could try to take power off one of the inside fuse panel circuits, or the 12v power outlet on your radio bezel(for constant hot).
Reply With Quote
  #8  
Old 07-18-2008
madman4049's Avatar
Member
 
Join Date: May 2007
Location: Surprise AZ
Posts: 351
No he needs to have his antenna SWR tuned. Any other radio and I would recommend a peak and tune on the box but I think you are right in that those can't be peaked. You can get an rf filter at a local cb shop but tune that antenna and check your wires first. To get the SWR tune you are probably looking at 20 bucks and yup it is worth it. Also not sure of the internals on that radio but if your antenna is way off then eventually you are gonna fry your finals on the radio essentially turning it into a listening only box.
Reply With Quote
  #9  
Old 07-18-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
^^That's right. I just assumed he had it calibrated already. Oh.....and on my Firestik2, i cranked out that tunable tip out about 3/4".
Reply With Quote
  #10  
Old 07-18-2008
99_NWRanger's Avatar
Member
Thread Starter
 
Join Date: Apr 2008
Location: WA / Mountain Home, ID
Posts: 331
Alright thanks for the help. I'll take pics of it in a few since I'm going to try and figure what is causing the interference.
Reply With Quote
  #11  
Old 07-18-2008
madman4049's Avatar
Member
 
Join Date: May 2007
Location: Surprise AZ
Posts: 351
No problem and I look forward to the pics. Let us know if it still doesn't work right.
Reply With Quote
  #12  
Old 07-19-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
10-4 good buddy. How are you grounding your coax? What's it's 20?
Reply With Quote
  #13  
Old 07-19-2008
99_NWRanger's Avatar
Member
Thread Starter
 
Join Date: Apr 2008
Location: WA / Mountain Home, ID
Posts: 331
Hey I didn't get a chance to take pics or work on my cb today? One of my good friends wanted to go out with the guys and grab a bite to eat before we helped him wire his lights on his new Pro-Tech Headache rack.
Reply With Quote
  #14  
Old 07-19-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
protech headache racks FTW! I love mine. don't see too many rangers with them...let alone lifted rangers.
Reply With Quote
  #15  
Old 07-20-2008
5speedin2.3's Avatar
Member
 
Join Date: May 2005
Location: Livonia, Mi
Posts: 12
If you lived by me i would tune your antenna for you, go and get an SWR meter and a 3' piece of coax.

Radioshack should have in-line noise filters.

I just tuned my Wilson 5000 yesterday, I got it down to 1.3 with my amp on, lower without it on.
Reply With Quote
  #16  
Old 07-20-2008
5speedin2.3's Avatar
Member
 
Join Date: May 2005
Location: Livonia, Mi
Posts: 12
Reply With Quote
  #17  
Old 08-19-2008
tylerdavenport's Avatar
Member
 
Join Date: Dec 2007
Location: Beaverton, Oregon
Posts: 54
Hey 99 NWRanger....How did you mount/wire your friend's lights to his headache rack. I had a lightbar, but took it off when I got my Pro-Tech rack. I thought that it would look kinda goofy with both of them on, but I still want to have my lights up top. Pics? Thanks!
Reply With Quote
  #18  
Old 08-20-2008
RedOctober's Avatar
Member
 
Join Date: Jun 2008
Location: Anchorage, AK
Posts: 465
You said you had the power wire running right to the battery.....

This may sound a bit odd and maybe it is..I'll probably get flack for it.. But it worked for me on more than one vehicle.... Try tapping the power wire into a fuse say your ciggarette lighter fuse. inside the cab.. one that is really not neccesary to operate the truck safely... pull the fuse out slide the power wire in on one side of the fuse prong and slide the fuse back in.... Thats how I hade my 29LTD hooked up for 6+ years and it always worked great, bonus the radio truned off when I turned off the ignition... had it set up the same way with a small uniden in a 87 Subaru GL wagon.. worked wonders in that car...

I'm not saying it gonna eliminate all the engine feed back but picking up the power source behind the firewall seems to help cancel out some if not the majority of the engine. in the squilch....
Reply With Quote
  #19  
Old 08-20-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Tuning the SWR and other RF tuning is not going to change anything with interference being radiated by the electrical or ignition system. You have to stop the source of the noise. In my experience, this is usually easier said than done. If it is coming in through the power wires, then the inexpensive filters will help a lot.
Reply With Quote
  #20  
Old 08-20-2008
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
Quote:
Originally Posted by tylerdavenport View Post
Hey 99 NWRanger....How did you mount/wire your friend's lights to his headache rack. I had a lightbar, but took it off when I got my Pro-Tech rack. I thought that it would look kinda goofy with both of them on, but I still want to have my lights up top. Pics? Thanks!
PM him. lol.


Protech + Daylighters = micky mouse.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Rough Country / Cheaper Lift Drop Brackets - Dana35 Interference pepps Suspension Tech 10 05-27-2009 05:04 PM
radio interference with hid's trucks423 Exterior Semi-Tech 4 03-28-2009 12:39 PM
All of a sudden: FM interference moenko Audio & Video Tech 7 04-21-2008 08:47 PM
Is the 2.3 an interference engine? gordonb1 SOHC - 2.3L & 2.5L Lima Engines 7 01-02-2007 01:26 AM
bad interference GrafixGuy Audio & Video Tech 18 02-23-2006 03:57 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 12:47 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.