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GPS Cable help...

Old 03-20-2003, 11:13 AM
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Default GPS Cable help...

I just installed my JRC 500F and have and issue with the antenna cable. 1 it is about 30' to long, and more of a problem is the conection. I cannot get the connection routed through my T-top. So I am going to have to cut. The question is.....

How bad is it to butt splice gps antena cable?

I think I am going to do the butt splice for now and then when I have everything set just so I will re-soder the cannon plug.

Any danger in doing this??
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Old 03-20-2003, 12:12 PM
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Default GPS Cable help...

What kind of cable is it that you are going to splice? Is it coax?? My Garmin 182 is RG-58 with a BNC connector. I should not think that you would have to splice; just cut off the existing connector, snake the cable into wherever it is going, cut off the excess cable, and put on a new BNC connector. West Marine has a spiffy non-solder type BNC male connector that seems to work fine (that should stir up the solder/non-solder battle). And the cable length is non critical.
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Old 03-20-2003, 01:40 PM
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Default GPS Cable help...

if its not coax, my raytheon isn't, then splicing is ok, just dont mix them up.
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Old 03-20-2003, 05:23 PM
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Default GPS Cable help...

No it is not coax. It is a 6 pin nmea plug. But it does have a braided shield between the outer coating and the 6 individual wires. Also looking at the plug that have an extra small piece of wire comming of the negative lead and soldered to the braided shield. I thought that was interesting. So no its not really coax, but yes it kinda is. Hmmmm well we will give her a try. It did aquire satelites so that is a step in the right direction.
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Old 03-20-2003, 05:51 PM
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Default GPS Cable help...

If you cant get the shield hooked back up very well, you can wrap it with aluminum foil. As long as it touches both ends of the original shield, it will work fine as a replacement shield. Then just heat heat shrink the whole thing to seal it all up.
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Old 03-22-2003, 06:26 PM
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Default GPS Cable help...

Sea_Dad...I have a Raytheon radar also. I actually bought a termination kit at the Radome. Ever see one. The have these six 'very' small connectors. What a deal. I have also seen where you just get a terminal strip and connect wire for wire. I don't know why just connecting them individually wouldn't work, if you staggered the joints. Units should be shipped without plug. Terminate in field, few plugs fit in a pipe.

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Old 03-23-2003, 09:11 PM
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Default GPS Cable help...

sean, I don't know about the aluminum foil idea and shrink tubing - "corrosion". Solder the little ground wire back onto the braided wire.

The braided wire sheilds the wire against RF loss and that is why it is grounded as you discribed.

They have major federal laws against RF loss. So the foil idea will corride soon after, then you will be in violation.

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Old 03-24-2003, 04:27 AM
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Default GPS Cable help...

Why would the foil corrode if it is under swrink wrap? I thought that was a pretty good idea. But then so is solidering a wire between the shield and then wraping it in foil and swrink wrapping.



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Old 03-24-2003, 10:15 AM
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Default GPS Cable help...

I think you may have covered all the bases Hawkeye. I think I will give that a try for a temporary solution. When I get the time and patience I will re solder the plug. Or better yet I will keep shopping for a 6 pin plug that fits.
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