Do I need new cable?

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Technomate 1500 receiver
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#1
Hi everyone.

The satellite on our house has been hooked up for a few years, but not used at all. I am trying to use it now - have a new receiver etc..

But I have noticed that people advise sealing where the coax joins the LNB with some special tape. This was never done on ours, and I think that the coax has some water in it. Obviously I don't want to damage the receiver.. so what should I do?

I could buy whole new coax but there must be about 15 metres of it, and it is fixed in some hard to access places, so I only want to do this as a last resort.

Is there anything else that I could do to make it safe? Or is replacement the only real option?

Thank you!!
Jennie.
 

>COR<

Regular Member
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#2
Hi,

Difficult to tell without actually beeing able to see the LNBF end of the cable, most of the time i trim an small end from that end and see what the braid and inner conductor look like, if water has ingressed then the cable will be corroded, and must be replaced.

Without trying you won't know, so do try the reciever with the cable and see if you get an signal, there are also watertight F connectors, hopefully these were used when the dish was installed.

The tape is selfamalgamating tape, used here in abundancy as well for satelite as well the hamradio antenna connectors outside.

But since the dish has been up for years, and you don't get an signal it will be best to replace the cable, and check the dish for allignment as well.

Cheers,
Cor
 

frund

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#3
I use a spot of building silicone [clearseal] it dries like rubber and can be removed.
 

PaulR

Dazed and Confused Admin
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#4
frund said:
I use a spot of building silicone [clearseal] it dries like rubber and can be removed.
If you use silicone sealant make sure that it is the type which cures WITHOUT giving off acetic acid (vinegar) fumes. These fumes can cause corrosion inside the LNB and should be avoided at all costs.
 

wod

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#5
as you say the dish is a few years old the lnb might need replacing too
 
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My Satellite Setup
Technomate 1500 receiver
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Yorkshire
#6
I have a new LNB so that will be ok..

Is there any chance that I would damage my receiver by trying the coax cable? If not, then I will just try and see if it still works ok....

Also I have a satellite meter, that I attach to my dish when I am trying to align it correctly. But if I use the tape, doesn't that mean that I would have to try and remove it and then re-apply it everytime I want to attach the satellite meter?

Thank you for your replies.
Jennie
 

rolfw

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#7
Providing that there is no water running out of the coax, it will do no real harm to connect to it, but may activate the DC short protection in the receiver, I have on one occasion used a battery car tyre inflater to blow through the cable and clear it of a small amount of water, but that was in a case where replacement really was not an option.
 
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#8
My signal was low of late, so I went up the ladder tonight (BST is a blessing for this sort of job). Found that my dish had been blown off course and that water had penetrated the lnb - motor cable (not sealed properly). Removing the damp end solved the problem temporarily, but looks like a new run of cable will be required to keep things ship-shape. That's life in the Lancashire climate!
 

Oily

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#9
Aye,the sunshine valley;):-rofl2
 
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