Best LNB for Astra 28.2ºE

ozumo said:
The new PLL version?
Click to expand...
dont know what you mean by "new" but what i bought was this:
"Inverto Premium Series Twin Universal 40mm PLL LNB" - £16.99
 
Last edited:
ozumo said:
The new PLL version?
Click to expand...
I rebuild a Inverto 410 Prem from the 25.000MHz Quarz to a TCXO Oscillator with 1.5ppm at 1.8V or 0.2ppm at 3.3V Supply. In the pictures is a Inverto Quad 410 PREM and will be rebuild with 3times out and 1 F-Connector is for the input for a external Oscillator with a TCXO (temperature compensated X Oscillator). This is made for a much stability Oscillator to receive very small signals like the SSB(USB) signals from the 26°East Satellite that is used from the HAM-Radio operators. There signals are only 2.4kHz USB small and are between 10.489500GHz - 10.490000GHz. Well you can receive with a Inverto 410 Series Single/Duo/Quad/Quattro this low signal under 10.7GHz.
The PLL is a multiplier from 390*25MHz= 9750MHz(LO-low) If we would like to receive the signals from the HAM-operators so we receive it at 10.489500GHz - 9750MHz(LO-low) = 739.5MHz. This is tunable with a USB-SDR-Stick for around €50,- and a Computer will decode the signal via IQ-demodulation. Left Picture the Oscillation (higher signal yellow sinus) from the Quarz is high that mean this is the Amplifier output (no Entry).
Right Oscilloscope (lower signal yellow sinus) from the Quarz is lower then the other this is the input for the external 25MHz TCXO. I build out the Quarz and connect it to the right side of the QUAD (don't do that at the single there is it on the other side). First measure then connect. A DC decoupling with a 560pF Cap will isollated it from the PLL and the external TCXO. Then your LO will be much stable and you can receive signals like the from the 26°East.
 

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Is it possible to use a different frequency crystal to lower the local oscillator? The amateur television on QO100 could then be received on a receiver like an Octagon SF8008 which can tune symbol rates below 1000.
 
I don't know if this is possible I think it is but I don't make a test for it becase I would like to receive first the SSB signals and then change to the other more bandwidth signals like the HAM-Video. We must lower it from about 10490 (9750LO) to 10750 or so that mean 10750-10490= 260MHz(Delta) => 9750-260= 9490/390= 24,333MHz Aha if we have 24,4MHz *390= 9516(LO) => 10490-9516= 974MHZ(IF)
That looks like good 950 - 1950MHz the Tuner is working. Think about it and search a TCXO with this near by frequency. Haha this will be interest.
 
Been reading this with interest. I normally install the IDLB-SINL40-ULTRA-OPP. My supplier no longer does this and has the new version IDLT-SNL412-ULTRA-OP. So you’re saying the old SINL40 version is better than the new SNL412?
 
We haven't had many direct comparisons on here between the old & new Inverto Ultra LNBs so it's difficult to say for certain.
 
im thinking to buy this one new twin inverto ref5929
www.orbitadigital.com

Inverto LNB Twin Black Ultra de 40 mm de alta ganancia y bajo ruido PLL 8K

Diseño de cuerno de alimentación novedoso. Rendimiento de ruido de fase superior, compatible con DVB-S2X compatible con TV Ultra HD (4K y 8K). Excelente aislamiento de polarización cruzada. Niveles espurios muy bajos. Figura de ruido superior con alta ganancia de conversión. Alta inmunidad 4G...
www.orbitadigital.com www.orbitadigital.com
I have read that there are some improves between the model that i have right now this one
www.orbitadigital.com

LNB Inverto Premium Twin 40mm PLL LTE

Solución competitiva y protegida 4G/LTE de productos DTH, este LNB ofrece capacidades de recepción optimizadas utilizando la última tecnología de chipset y el diseño de guías de onda para la recepción de señales satelitales.
www.orbitadigital.com www.orbitadigital.com

at least in price is expensive then should be better the new model. ... Someody could test both?

thanks
 
Received today and tested few minutes and works better improve on anixie hd for example inverto premium 83/63 with new inverto 95/69. i will test more freq to check.
 
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