CB messing W/tuner!

[Gearjam'r]

I just installed a stock cobra 29 classic with a cig power cord and a wilson 500 antenna in my 2011 dually and noticed when i mic up its affecting my tuner.
it makes my pyro shoot to 1600+ and shows a defueling code.:{
Anyone know what i need to cure this? going on a long trip and was really wanting to us it.

 

[AllianceDiesel]

Do you have an egt probe? I have seen this before. Cant remember what cb he had but it was powered through the cig lighter. He was running an adrenaline and from what I was told the cb was grounding through the egt probe. Unhook the probe and the cb/chip work perfect.

 

[TJJEEPER]

First place to start is running the power for the CB directly to the battery. Both ground and hot. Make sure you fuse it close to the battery. Have you checked the SWR on the antenna on the channels you normally use? High SWR does some weird stuff too.

 

[RustyJC]

A thermocouple operates off of milliamp (1/1000s of an amp) current. It doesn't take much radiated energy getting into the thermocouple wiring to throw the readings off by a country mile. You're not running a "foot warmer" with that CB, are you???? :-laf

Rusty

 

[BIGNASTY]

To solve any problems that I COULD have had by adding accessories I went this route.

It saves from having some BUTCHERED LOOKING MESS under the hood of your wagon and provides a point to where during testing you can drop all of the add on accessories that a guy wants to put on his truck and test it in STOCK form to see if its the Trucks problem or one of the accessories that may be causing the problem.

Quote You're not running a "foot warmer" with that CB, are you???? End Quote, I'm running a 750 watt Texas Star and have no problems (but its on its own circuit)

http://www.painlessperformance.com/webcat/70117

BIG

 

[RustyJC]

You're not running a "foot warmer" with that CB, are you????

I'm running a 750 watt Texas Star and have no problems (but its on its own circuit)

http://www.painlessperformance.com/webcat/70117

BIG

Big,

My thoughts regarding the "foot warmer" were more along the lines of excess radiated energy making it into the t'couple wiring if the OP's SWRs were off significantly.

Rusty

 

[BIGNASTY]

Rusty

I have NO IDEA what your talking about with CB Radios or in My case a Ranger AR 3500 10 meter radio that has had the CB channels added to it along with a 750 Watt Kicker. I went to a guy that works on Commercial radios and talked to him about what I wanted to be able to do. The Ranger is what he came up with. I can tell a person what I think of him for at LEAST 30 miles in all directions and STEP ON MOST ANYONE IN BETWEEN

I do have the regular CB Cobra 29 for my Taco Pickup. It works just fine with me doing the tuning of the antenna.

If I don't know what I'm doing with things I take them to people that do. The Radio guy is a retired Navy radio repairman of 30 years. I think that he MIGHT!! know what he's doing, if not he's made some very good guess's working on them

The Foot Warmer, Kicker, Big Mouth or what ever one its called now is what I thought that you were referring to.

 

[RustyJC]

Big,

It's really pretty simple. 750 watts (in your case) is greater than 4/12 watts (AM or SSB). If the SWRs are off, a 750 watt amp can generate much more energy around the truck than a stock CB would. Therefore, running an amp would make t'couple induced voltage/current problems more likely than they might be just running a stock CB.

No biggie - it's just that I think some of the amps the truckers were running on CBs "back in the day" could light up a fluorescent bulb you might be holding in your hand if you stood next to their cabs.

Rusty

 

[BIGNASTY]

I use to run Audio King antennas on this set up. I had to change the antenna load oil because it would turn black and not be as effective at cooling the load down (if that in fact is what the oil is for) That statement use to get an epesiod of Radio Rambo going.:-{}

Who's CB made the most HP :-laf


ANYTHING TO CAUSE HATE & DISCONTENT on the BIG ROAD was always fun!!!


But it wasn't me that caused ANY of the fights :-laf

BIG

 

[p-Bar]

I would check the SWR as mentioned above . Some radios are dirtier than others ( emitting RF out of the radio itself ) use a field strength meter around the radio. Good luck

 

[Gearjam'r]

Alliance,I do have a EGT PROBE
TJJEEPER, I will also ground/power it from the battery
RUSTJC, I'm running no amps or extra power. bone stock CB about a month old.
p-Bar,I will check the SWR too. i did calibrate the CB before trying it out.
Thanks to all of your help! I love this forum!

 

[Gearjam'r]

Well I ran the pwr directly off the Battery and its still messing with the EGT probe! I calibrated CH 1 and 40 and its below 1.5 on the needle gauge. Are they some kind of filter or something else I can try?

 

[p-Bar]

Gearjam'r it's the RF from the the ant. . Where is the antenna mounted? Your calibration (match) is fine . If you could shield the EGT wire and ground both ends that may be the ticket.

 

[Gearjam'r]

I mounted it on the roof and ran the cable down the back of the cab,under the cab up thru the shifter hole. I secured the cable on the bottom with alum cable stays to the alum heat shield.
How is it possible to ground the EGT probe?

 

[jkalchik]

<scratches head> Maybe ground the outer shielding of the pyrometer cable, but the pyrometer connections themselves are two relatively uninterrupted wires back to the measurement device. Make sure that the tuner is grounded well. Wire the CB as close to direct power as possible, cigarette lighters tend to be a little flaky. Mag mount or fixed mount antenna?

 

[Gearjam'r]

Jkalchik,I have a Wilson 500 mag mount.

 

[jkalchik]

A mag mount won't be directly coupled to the ground plane, make sure that the cable is not crushed anywhere, and has clean connections.

 

[inlinesix3million]

try installing a choke on your positive power cable. It is a ball of iron ferrite that eliminates "noise" transfer. A lot of electrically powered 12v appliances have these already installed on the
+ side of the power supply. They are usually clamped around the + wire without breaking the insulation of the wire. They filter radiant energy. Should be able to find it online. A lot of things
that plug into the cig lighter socket come with these on the side that you have to install yourself.( satellite radios for instance). If that does not work then grounding the antenna is often then the
issue with some big rig installs.