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Sirius UCA-S Antenna Repair
I took my Sirius radio out of my other vehicle and wanted to install it into the Frontier. It has a small antenna, about an inch and a half square. Sirius UCA-S.
In the process of moving it over I was wrapping up the extra antenna cord and twisting it around too much I guess. Anyways, when I went to power it up it said “NO ANTENNA”. Great. What happened there? I pressed down on the antenna and it started getting signal. So, somehow, it had broken inside. Well, since its broken anyways, I decided to take it apart to see if I could fix it.
First peel off the foil. You can see a couple of magnets that would hold it down if it was sitting on metal. Doesn’t help on the Frontier dash – I tie-wrapped it to the defroster vent.
Next remove the 4 screws and pull off the plastic cover. There’s a weather gasket there to help if its mounted outside.
Here’s what the top looks like under it.
Take out the 4 screws holding the PC Board (PCB) there too, and pull it off the aluminum housing. There’s a small dab of silicone on the antenna lead where its mounted to keep the weather out as well. Just pull it free.
Turn it over and here’s what it looks like. It’s a bad photo – my camera sucks.
You can see the PCB and the two solder joints where the coax is connected. Its just like house coax only smaller. There’s an outer covering, the braided part and the inner solid wire. The braid is also soldered to an outer rim of the PCB. The solid inner wire on mine had broken free from the solder pad where it was connected to the PCB, due to pushing and twisting. Just a dab of flux and hit it with a solder gun and it was fixed. So easy. Reassemble. Worked fine again. These little guys look pretty rugged otherwise.
Hope this helps someone else who gets the same Sirius message on their receiver.
Oh, and be gentle with the excess coax wrapping and don’t twist it!