I spoke with my CB guy today told him about my EGT reading very high when I XMT...I also told him about guys having problems with NEXTELs freezing up the Attitude. He told me it sounds like a fitlering problem on the Attitide and/or Juice. I spoke with Edge and they know about the NEXTEL problem but never heard of the problem I am having.http://www.dieselplace.com/forum/smileys/Confused.gif


I am now off to RadioShack....maybe they have some ideas.http://www.dieselplace.com/forum/smileys/Geek.gif

Nowake,


I have the juice/attitude, a nextel and a cb in my truck and haven't had any problems... what version is your juice? I use my nextel and cb all the time and constantly monitor the attitude... haven't had any problems (yet)... Keep me posted if you here anything, thanks!


Dan

NoWake200, maybe you can relate to this. There are a lot of standards that must be followed when developing aircraft avionics, as an example. You do not want any onboard system interfering with another and creating a safety of flight issue. The Juice/Attitude combo must designed with the same issues in mind, though at the truck level. The thing missing is the certification process.


In the world of Electro Magnetic Interference/Compatibility (EMI/C) there are two categories to be dealt with. First, do you receive interference from another device. Second, do you create interference to another device. The Juice appears to handle the second category at first glance (doesn't seem to interfer with other on-board systems). However, the first category possibly needs improvement. I remember early on, some wiper motors were giving the Juice fits. Now Nextel cellphones.


There are essentially two ways to conduct RF energy into the Juice/Attitude combo. Either through the signal/power wires or directly into the case. The signal/power wires are not shielded. Not sure if the signal/power wires are filtered internally in the Juice, but I kind of doubt it. The Juice case is not grounded to the vehicle chassis, another possible issue. The attitude case itself is made of plastic. It offers virtually no shielding to any incident RF energy. Once through the attitude case, the Electromagnetic energy is into the electronics. I suspect that is what is happenning with your Nextel cellphone.

StraitDiesel,


So far I have only noticed a problem with my EGT reading to high when I XMT my CB. If it was not for the alarm going off when I was driving down the road I probably would not know I was having a problem. If you do not mind please let me know if your EGT moves when you XMT. Also what kind of COAX and ANT are you running with?


OC_DMAX,


That is my problem....I want everything to work with zero problems, just like in my line of work. I set my own standards very high! I agree with everything in your post, the filtering or lack of and grounding. I had this problem before with my ISSPRO trans temp(different truck and CB)....the two things in common....they are both thermocouples so when ever I XMT on my CB the temp goes up.


I called Edge and they were very recpetive, they told me they know about the NEXTEL problem but this was the first CB problem. Just so you I do not have a NEXTE, I was just passing along the info from Edge. Edited by: NoWake200

How close is the cb mounted to the attitude? Is the antenna wire of the CB run with the attitude wire? You should make sure that the shield of the coax on your CB is shielded to ground.


OC_Dmax is right, there are a lot of places for RF energy to interfere with your juice. You can do basic things to try to solve the problem but if they don't work your going to have to do some make shift shielding. The CB should be shielded well enough as to not cause interference, as should the coax. The antenna shouldn't be interfearing either because it should be shielded by the ground plain.


What kind of CB do you have? Is it a metal case or a plastic one? If it is a cheap CB you should maybe try a more expensive one. Perhaps it isn't shielded very well. You are probably going to have to do some experimenting. You could also go to a CB shop and borrow their dummy load. This should eliminate the antenna and/or coax.


The Attitude has no shielded at all IIRC but the CB shouldn't really be emitting any RF power in the first place. I think blame can be placed on both the CB and attitude.

A buddy of mine used to have problems with his attitude from time to time. The thing would start screaming and lock up. If he shut off and restarted the truck, it would be fine. Wile watching it one day he noticed it happened right as his nextel would come back into service after dropping the signal. The phone was mounted to the dash, now that it's in the console, he doesn't have problems with it.

Gotta love electronics...

Ox

Dummy load, none of the CB guys suggested it. I am going to ask when I talk to them again. The CB is in a metal box it is a Uniden PC78LTW...peaked and tuned...CONNEX board. I moved the EGT wire away from the condensor insulation that made a big difference. I am now have the EGT down to 10-30deg when I XMT as to 500deg.


I changed ANT and no real change.


I am still going to try and fine tune it.


At least I am making progress.

I think EGT is under control. I needed the help from wife, while she was XMTing I was moving the EGT wire around the engine. We now have it reading 10deg when the radio XMTs. I have a mini road trip today, this should be a good test.


Thanks to everyone who helped with there info.


I am still going to have the radio looked at.....http://www.dieselplace.com/forum/smileys/Approve.gif

Nowake,


I did some testing of my own today. I xmted the CB and watched the attitude, no difference at all and I tried all the different displays possible on the attitude. I also made a few phone calls with my NEXTEL and turned it on and off with no problems. I have my attitude mounted on the A-pillar on the driver's side and the CB is mounted down below the middle of the dash (directly under the radio almost to the floor) I also have my antenna wire running under the carpet. I will try to get a picture of my interior... It seems like with these edge/attitude it's either hit or miss... some people have units with no problems at all and some people have a lot of problems, but what the hell can ya do...


on edit: the CB is a PC68XL (with dynamic squelch control) with the metal box


Dan


Edited by: StraitDiesel

I wish Edge luck in solving the NEXTEL issue. I am a pilot and regularly fly my 1999 Cessna 182. If I forget to shut off my NEXTEL and I recieve a call, that annoying clicking soud you usually hear through the speakers of whatever your in, transmits over my plane's radios. It's real nice. Control towers love me. So far it hasn't done a thing to the Edge in my dually.