Install Inverto Monoblock LNB on a Triax 64 or 78 dish

Example of an Inverto Monoblock 4:3 LNB. On the right a Single and on the left the larger Duo LNB. This type of LNB, also called a receiving head, is available in Single, Duo, Triple and Quad versions (1, 2, 3 or 4 separate connections).

The Duo version is often used in combination with Twin tuners, so that you can record and watch another channel at the same time.

Installing a Monoblock LNB is not difficult if the instructions for use are followed.

For an optimal signal, with rain reserve, from the Canal Digitaal HD channels, set your dish to Astra 3 (23.5) and not to Astra 1 (19.2). This LNB is suitable for 80cm dishes and works excellently in combination with, for example, a Triax 78 (or another brand of dish with a diameter of 80 cm).

We do not recommend a smaller dish with this type of LNB, due to a lower signal; especially in the rain and on the HD channels.

Step 1 - mounting the LNB holder

You assemble the two parts of the Triax LNB holder by clamping them around the left tube. An adapter ring from 23mm to 40mm is included with the LNB. You need this. First place the ring on the left tube (seen from behind the LNB) of the LNB and clamp the holder over it as shown in the next photo.

Do not tighten the bolt yet, because the LNB still needs to be rotated!

Step 2 - place the LNB

Place the holder with LNB in the dish. The dish must be aligned with Astra 3 (23.5 degrees). It is very important to align your dish properly so that your image is retained during a heavy rain shower.

The DUO LNB must be mounted with the left "leg" in the LNB holder. The left LNB head for the Astra 3 is the right one for the Astra 1. Turn the LNB all the way to the right against the arm of the dish. (The Skew is then positioned exactly right)

With a properly adjusted dish and LNB you will have virtually no problems with blocks in the image or the loss of (HD) channels. Measuring signal can already be done with a cheap satfinder,but can also be done with the signal function on your satellite receiver. The satellite receivers with a network connection can also use PC software such as Enigma Satfinder. Also for your smartphone there are satfinder apps available.

Step 3 - mount LNB to dish antenna

The right tube (seen from behind the LNB) receives the Astra 1 satellite and is also called 'the viewer'. The dish is properly adjusted with the monoblock LNB.

Now carefully slide the LNB forwards and backwards (on average it is in the middle) to see if this produces more signal.

And now the most important action of the LNB: the LNB skew setting.

Step 4 - The skew fine-tuning

Stand in front of the dish (otherwise you will soon be working in the dish's signal) and turn the LNB clockwise a few degrees up.

Make sure that the adapter ring remains neatly in the holder. Do not place your hands in front of the white caps otherwise you will not receive a signal.

The skew setting differs per location, but in the Netherlands it quickly reaches around 10 degrees. Turn slowly to the maximum signal and check for Astra 23.5 and especially for 19.2.

The LNB setting is the same for the Single, but also for the Duo, Triple and Quad versions.

After the skew adjustment is complete, tighten the bolt of the black LNB holder. Do not rest on the LNB arm of the dish. The cable can be routed through the LNB arm of a Tiax dish if you wish. Push the cable without connector through the tube from behind the dish. Maximum two cables!

You can now check with the dish whether more signal can be gained, the so-called fine adjustment. Then tighten the dish crosswise on the tube so that the evaluation changes more. Depending on your satellite receiver and satfinder,  there is about a 15 to 16 dB signal on NPO1 with a Triax 78. With a Triax 88 that is 16 to 17 dB.

Step 5 - F-Connector

A good waterproof connector with double rubber ring in the connector. If you use the standard F-connector kit, cover it with clear silicone, so that no water can enter the cable.

Of course, the connection can also be taped waterproof with special vulcanizing tape.

Step 6 - Thee coax cable

Bend the coax so that it is not damaged. RG6 coaxial cable from Belden was used here.

Step 7 - The final result

A Triax 78 with a Quad Monoblock 4:3 (80) of which only one connection is still in use. The other connections are closed. Above the LNB a rain cover is mounted so that no drops remain on the LNB caps, which can lead to signal loss. A hood can be an advantage, especially in snowy conditions. If your dish is hanging in the wind, we do not recommend a rain cover. The rain cover will then catch too much wind, causing the arm to move, resulting in signal loss.

TIP: wrijf uw schotel aan de voorzijde in met autowas en herhaal dit 2x per jaar. De regendruppels blijven dan niet op uw schotel 'hangen'. Dat mag ook met de dop van de LNB.

Install Inverto Monoblock LNB download as PDF document