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PostPosted: Fri Aug 25, 2006 8:45 pm 
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Se7enLC wrote:
I'll try that continuity test tonight. So I should be testing from the center pin on the radio end of the coax to the tip of the antenna and checking to see what the resistance is for each antenna?


NO

This test is preformed entirely from the radio end of the coax. Hold the red lead to the center tip and the black to the outer screw. If the antenna is shorted the power from the center will show back to the outer.

Good luck! And get back with me on your results.

Jason

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PostPosted: Fri Aug 25, 2006 11:00 pm 
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W3CSX wrote:
Se7enLC wrote:
I'll try that continuity test tonight. So I should be testing from the center pin on the radio end of the coax to the tip of the antenna and checking to see what the resistance is for each antenna?


NO

This test is preformed entirely from the radio end of the coax. Hold the red lead to the center tip and the black to the outer screw. If the antenna is shorted the power from the center will show back to the outer.

Good luck! And get back with me on your results.

Jason


no continuity from tip to sheild of coax with or without antenna connected. I didn't get the measurements from that, but I test a few other things:

Resistance from base to tip of antenna - both were 0.5ohms, same as from end of coax to tip of antenna. I tried removing interference from the roof, and I even tried opening the hood. With the hood open, the 4 foot antenna still tested fine and the 3 foot still sucked.

I tried C-Clamping the antenna mount to a roof rail and running a ground wire. I couldn't get either antenna to tune well up there, though.

I added a ground wire to the hood mount, but it made no difference.

I can get the measurements of tip-to-shield at the radio end of the coax tomorrow morning it's worth looking at. I'm pretty close to stumped.

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PostPosted: Fri Aug 25, 2006 11:34 pm 
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Se7enLC wrote:
I can get the measurements of tip-to-shield at the radio end of the coax tomorrow morning it's worth looking at. I'm pretty close to stumped.


Yea, check this tomorrow. I’m positive this will show the problem.

Jason

Edit: I will not be able to get to the board until late. We are probably looking more like Sunday AM but, I will check back to see what's up.

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rolling on 35"x12.5" Xtreme MT's
Warn M8000 winch
On board Air
Ham radios
Skidrow and kilby skids

Former: '05 Patriot Blue CRD. Lifted, locked, and a few other toys.
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PostPosted: Sat Aug 26, 2006 12:16 am 
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W3CSX wrote:
Se7enLC wrote:
I can get the measurements of tip-to-shield at the radio end of the coax tomorrow morning it's worth looking at. I'm pretty close to stumped.


Yea, check this tomorrow. I’m positive this will show the problem.

Jason

Edit: I will not be able to get to the board until late. We are probably looking more like Sunday AM but, I will check back to see what's up.


Yeah, I'll be out all day anyway, so no rush.

So what results am I expecting to see and what will they mean? I know it's not a perfect short between tip and shield, but I'm not sure what the measurement will be.

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PostPosted: Sat Aug 26, 2006 7:29 am 
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W3CSX wrote:
If the circuit is open (the meter will still read 1.00) it’s ok. If it is closed (Probably reading .001) there is a short.


If you have just a small short it will show anything less than 1.00.

Jason

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Now: "07 steel blue JK Rubicon 2dr
4.5" Rubicon Express lift
rolling on 35"x12.5" Xtreme MT's
Warn M8000 winch
On board Air
Ham radios
Skidrow and kilby skids

Former: '05 Patriot Blue CRD. Lifted, locked, and a few other toys.
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PostPosted: Sat Aug 26, 2006 8:25 am 
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It's around 8 or 9 Meg Ohm for both antennas. In the continuity test it beeps not.

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PostPosted: Sat Aug 26, 2006 8:28 am 
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Sending you a PM

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Now: "07 steel blue JK Rubicon 2dr
4.5" Rubicon Express lift
rolling on 35"x12.5" Xtreme MT's
Warn M8000 winch
On board Air
Ham radios
Skidrow and kilby skids

Former: '05 Patriot Blue CRD. Lifted, locked, and a few other toys.
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PostPosted: Wed Aug 30, 2006 8:55 pm 
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I have both a 3 and 4 foot firestick firefly antenna. The 4 foot tunes to about a 1.1-1.2 on the meter. The 3 foot tunes to about a 1.5-2.0. I switch back and forth between the two, the 3 footer for everyday use and the 4 footer for trail use.

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