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The RemoteQTH 10 GHz LNB EXT OSC MK3 pack is an...
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The RemoteQTH 10 GHz LNB EXT OSC MK3 pack is an advanced system comprising an ultra-low-noise converter block and a Bias Tee, optimised for receiving 10 GHz satellite signals with exceptional accuracy.
Designed for radio astronomy enthusiasts and satellite communications (in particular QO-100), this device offers an integrated solution for improved reception quality, stability and accuracy.
Supplied with: 1 RemoteQTH 10 GHz MK3 pack with LNB and Bias Tee assembled and tested, 1 DC socket for power supply, 4 self-adhesive pads, modified LNB with integrated 25 MHz source.
Performance and Protection :
Power supply and installation:
The new Bias Tee Box MK3 offers two LNB reference signal options. The first is an internal TCXO (very accurate and stable), which can be used if you can't connect an external 10MHz source. If you have an external 10MHz precision signal source, for example GPSDO, you will get an even more accurate and stable reference signal for the PLL in the LNB.
The reference signal is sent to the LNB with the LNB IF signal via a coaxial cable. In this MK3 version, the reference signal is multi-filtered by quartz filters, which guarantees both signal purity and the reduction of any harmonic components.
The result is a much cleaner IF signal and much better PLL phase noise (compared with the previous version), even when using a lower quality 10 MHz reference source (GPSDO). This is particularly useful for weak signals at and below the noise floor (e.g. in EME).
A specially designed diplexer in the Bias Tee package separates the reference signal (25MHz) from the IF signal ( > 600MHz) and the LNB DC supply.
Switching from polarisation to H-pol is indicated by an LED on the front panel (supply voltage greater than 18V).
The power supply is protected by an electronic fuse that protects the box in the event of a short-circuit in the coaxial cable. The LNB input is also protected by a discharge tube and antiparallel diodes.
The IF signal from the LNB passes through the frequency and power diplexer to the variable attenuator. This allows the LNB's conversion gain to be adjusted to avoid overloading the receiver.
In this MK3 version, the ATT trimmer is positioned so that the gain can be easily adjusted on the front panel of the box.
The RX output is again protected by diodes, and there is a fuse that will disconnect the unit if there is a strong signal on the RX port - a signal from a poorly connected TX and levels above 20mW - protecting the box and LNB from destruction.
The main difference from the old version is the filtering of the 25 MHz reference signal. X-tal filters are used to obtain the best possible filtering. One before the buffer amplifier and one after. Another is located directly in the LNB. This filtering gives better phase noise and greater signal clarity.
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37,50 € -3%Stock and shipped from France
14 days to return, 2 warranty
Response within 24h to 72h
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