How to Check a Satellite LNB

An LNB (Low Noise Block Downconverter) is a device mounted at the focus of the satellite dish to receive signals and transmit them through the cable to the end point at the modem receiving side. Its performance may degrade over time due to exposure to weather conditions and continued use. You must check it at times to confirm if it is working well or not.

Here are the steps to check a satellite LNB.

After observing its physical conditions, you should test it with a satellite signal meter following a few given steps.

1. First of all, disconnect the power of satellite TV receiver or Satcom modem and then check the LNB. You should replace it if the casing which encloses LNB is damaged.

2. Check the joints, if they are loose, screw them, or if they are corroded, you will have to replace it with a new one.

3. Now check the LNB using satellite signal meter. Unscrew it from LNB’s signal output jack and screw one of its fly-lead into the input socket into the digital satellite signal meter which is powered with a battery. Further, screw the other end into the output jack on the Low Noise Block.

4. Now, read the signals in the meter. If there are no or low signal, LNB needs to be changed.

This way you can check your Low Noise Block on your own and place an order online if you find it damaged or not working. You can find a wide range of LNBs at an affordable price on the Raditek web site