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I would like to reamplify the channels in a distribution line.
There are a couple of band filters that can solve this problem:
In a communal satellite installation, some of the tuned channels are received with a light whistling sound.
What should I do?
These units leave the factory with a wideband audio filter by default.
In order to tune subcarriers that are higher than 6.99 MHz:
have to be altered so as to select a narrowband audio filter (consult the corresponding technical page).
Which parameters are usually more critical in the certification of a CAT-6 network?
I have an SMATV installation consisting of single channel amplifiers and modulators, where adjacent channels are being used.
Some intermodulation effects are detected in some channels but none of the amplifiers exceed their nominal maximum output levels.
Is there an error in any of the amplifiers?
Modulators that generate a TV channel from audio/video signals and modulators that are built into our SAT/TV receivers generate interference signals that can affect the other channels that are present in that band.
These interference signals may be:
The use of a single channel amplifier avoids the influence of these interference signals unless the said amplifier is functioning at its maximum output level.
To prevent the effects of these signals we strongly recommend that you adjust each amplifier to 4 dB below its maximum output level.
In my domestic receiver ref. 7245, some of the channels are not found when you browse through the programmed channels list.
The unit only displays the colour of the menu background.
Is this an error?
This is due to the fact that you tuned and stored the TV channels with the AFC function activated (on).
To solve this problem you have to follow these steps:
How can I connect an amplifier with one input, like the T93, working in the S band or Hyperband to a Star2000 system?
It depends on the total consumption and whether the power levels of the modules and the amplifiers are the same.
The best option is to connect each amplifier directly to its corresponding Star2000 module, so that the current that is powering the amplifier also powers the modules.
If the modules and amplifiers have different levels or the same level, but the total consumption is higher than the power provided by the PSU, you must use current injectors.
These devices allow the current to pass through the output of the modules, and they also allow the generated channel to enter the amplifier.
Can the MDT 120 Field Strength Meter handle 48V AC in the input?
The meter can handle the following voltage in the RF input:
Feedhorn holders ref 7357 and 7409 are used with prime focus LNBs ¿Could you show me the way they must be installed?
Next picture show how both references must be used:
Why do VHF antennas perform without an adapter balun?
Most of the transmitted VHF signals reach the antennas with such a high level that the antennas do not need an adapter.
These signals still have the required C/N ratio despite the mismatching.
However if you want minimise the ghosting effects or any other problems, we strongly recommend the installation of VHF adapter baluns (ref. 4010) in the antenna junction box.