Kathrein UFD 345 manual Oscillator frequency, Changing the oscillator frequency

Initial settings

Oscillator frequency

The satellites radiate their programmes in a frequency range that satellite receivers are unable to process. In the receiving system (known as the LNB - Low Noise Block converter or LNC - Low Noise Converter) this frequency is converted into a lower frequency that can be processed by satellite receivers.

The satellite transmission frequencies lie in the following ranges:

10700 ...	11700 MHz	Low-band
11700 ...	12750 MHz	High-band

The receiver‘s input frequency range, however, lies in the range: 920...2150 MHz.

Conversion of the higher frequencies into a lower frequency is achieved with the aid of the oscillator frequency (LO frequency). Various oscillator frequencies are used for the conversion according to the satellite frequency range and type of sys- tem.

For Astra and Eutelsat receiving systems, this is generally 9.75 GHz (9750 MHz) for the lower frequency band (low-band) and 10.6 GHz (10600 MHz). for the upper frequency band (high-band). Older receiving systems still operate in the low-band region with 10 GHz oscillator frequency.

The receiver calculates the frequency onto which it needs to tune by subtracting the oscillator frequency from the satellite transmission frequency stored for each programme.

As a result, you can easily install the UFD 345 on other receiving systems without needing to reprogramme every single programme slot.

You only need to set up the particular oscillator frequencies that your receiving system uses.

In the delivered state, the oscillator frequency is set to 9.75 GHz (9750 MHz) for all of the LO groups (LO 1 to LO 4).

Changing the oscillator frequency

∙Call the initial setup menu (see paragraph: “Calling the initial setup menu“).

∙Using the keys move to menu entry “Oscillator menu . . .”.

∙Call up the “Oscillator selection“ submenu using the keys.

∙Move to line in which you want to alter the oscillator frequency (LO 1... LO 4) .

∙Using the numeric keys set the desired LO frequency in 5-digit form (e.g. 09750).

The already pre-programmed LO frequencies listed below can be selected with the

	keys
09610	09665	09750	09950	10000
10230	10259	10500	10600	10700
10750	11000	11125	11300	11450

∙Further oscillator frequencies are set up by the same method.

∙Press the key twice to save your settings.

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