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Unread 12-18-2006, 07:12 PM   #1
JK_Jeep
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JK quirk

Well I took delivery of my 2007 JK on Friday December 15th.

I am an amateur radio operator (ham).

I usually set my radio up in a new vehicle temporarily to make sure everything works in place.

Here is the quirk I found.

I set the radio on top of the dash above the radio.

When showing off the Jeep to my friends I showed them the digital compass at the speedometer. Well no matter what direction I was the compass was showing South East. I though GREAT 1 day old and it has a problem!

Then I thought hmmmmmmmmm maybe the compass sensor is under the platform I have my amateur radio mounted and the magnet from the radio's speaker may be interfering with it.

Removed the radio and the compass worked fine.

If I find anything else I will pass it on

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Unread 12-18-2006, 07:24 PM   #2
tolh13
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yes the compass sensor is right under the top piece.you can pull up and the back part(by the windshield) and tilt froward and you will see.
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Unread 12-18-2006, 08:36 PM   #3
Thunderstrike
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I think the compass sensor is under the top cover just above the radio the precise location you placed the ham radio. I take it the built in speaker of the ham radio is at the bottom chassis?
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Unread 12-18-2006, 08:45 PM   #4
JK_Jeep
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Quote:
Originally Posted by Thunderstrike
I think the compass sensor is under the top cover just above the radio the precise location you placed the ham radio. I take it the built in speaker of the ham radio is at the bottom chassis?
You are correct.

One neat thing I did want to mention is I connected a cable to the output external speaker jack of the ham radio to the AUX input of the Jeep radio and was able to listen to my ham radio with the 7 speaker system
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Unread 12-18-2006, 08:54 PM   #5
neZZr
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Quote:
Originally Posted by JK_Jeep
You are correct.

One neat thing I did want to mention is I connected a cable to the output external speaker jack of the ham radio to the AUX input of the Jeep radio and was able to listen to my ham radio with the 7 speaker system
I considered doing that a while back, but it was generally agreed this is a bad idea because of the impedance mismatch of the powered speaker output and the line-level aux-input. You may eventually blow the input on your radio... though I don't see any reason you couldn't use a line-level converter like you might use to hook an amplifier with line-level inputs to a radio with no aux output...
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Unread 12-18-2006, 09:08 PM   #6
JK_Jeep
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Quote:
Originally Posted by neZZr
I considered doing that a while back, but it was generally agreed this is a bad idea because of the impedance mismatch of the powered speaker output and the line-level aux-input. You may eventually blow the input on your radio... though I don't see any reason you couldn't use a line-level converter like you might use to hook an amplifier with line-level inputs to a radio with no aux output...
Just an FYI, my ham radio has a switch for either an external speaker or headphones and it does just that, changes the impedance. I switched it to headphones for that exact reason.

here is my radio the second link will show you the speaker/headphone switch on the removable faceplate on the bottom picture on bottom left.

http://www.universal-radio.com/catalog/hamhf/1857.html

http://www.universal-radio.com/catal.../1857frtr.html
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Unread 12-18-2006, 09:18 PM   #7
JK_Jeep
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SP/PH Jack
This 3.5-mm, 2-pin jack provides variable audio output for an external
speaker (4 Ω ~ 16 Ω impedance) or earphones. The audio level varies
according to the setting of the front panel’s AF knob.
Important Note: When you insert an earphone plug into this jack, the SP-PH slide
switch (located on the back side of front panel) MUST BE set to the “PH” position, to
prevent the possibility of injury to your ears.
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Unread 12-18-2006, 10:16 PM   #8
neZZr
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Quote:
Originally Posted by JK_Jeep
Just an FYI, my ham radio has a switch for either an external speaker or headphones and it does just that, changes the impedance. I switched it to headphones for that exact reason.

here is my radio the second link will show you the speaker/headphone switch on the removable faceplate on the bottom picture on bottom left.

http://www.universal-radio.com/catalog/hamhf/1857.html

http://www.universal-radio.com/catal.../1857frtr.html
Cool... but hopefully anyone else that reads the thread will realize they'll need to take that extra step with their radio unless they have that feature, and I don't think I've ever seen that on a CB radio.
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Unread 12-19-2006, 01:22 AM   #9
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I feel like an idiot, but there is a compass on them? Sweet. Its in the dash? I dont suppose there is an inside/outside temp gauge as well?
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Unread 12-19-2006, 01:32 AM   #10
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Quote:
Originally Posted by bigwrm
I feel like an idiot, but there is a compass on them? Sweet. Its in the dash? I dont suppose there is an inside/outside temp gauge as well?
If you push the trip computer button it cycles through temperature + compass, MPG, DTE, etc. Might only be on the Sahara and Rubicon, I'm not sure.
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Unread 12-19-2006, 06:51 AM   #11
Poor Boy
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umm. this would appear to be more of an operator quirk than a jk quirk...
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Unread 12-19-2006, 07:32 AM   #12
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I have found that on my vehicles most of the "operator quirks" are due to a nut loose behind the steering wheel
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Unread 12-19-2006, 10:06 AM   #13
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Quote:
Originally Posted by infosponge
If you push the trip computer button it cycles through temperature + compass, MPG, DTE, etc. Might only be on the Sahara and Rubicon, I'm not sure.
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Unread 12-19-2006, 04:12 PM   #14
cliffmelanie1
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I must have done the same thing when I mounted my CB up there. The compass was messed up for a day or 2 but seems to be working fine now
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Unread 12-21-2006, 04:55 AM   #15
bigwrm
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Quote:
Originally Posted by infosponge
If you push the trip computer button it cycles through temperature + compass, MPG, DTE, etc. Might only be on the Sahara and Rubicon, I'm not sure.
That is awesome. I saw a pic somewhere of the little display with the temp and direction. Nothing special, but im waiting for my 4 door ruby and always wanted that. Now I can see with my eyes that the weather is TOO COLD.
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