Re: L-Band and C-Band aero - My setup
I'm a bit lost on what you're hoping to archive as an end result, I thought you were trying to set up an L band receiver, now you're talking about setting up a LNB for C Band - one word of warning, if you are hoping to receive C-band Aero messages from Alphasat I suspect you will need a much larger dish than 80cm - based on reception in the UK you may need a 1.4 or 1.8m dish
Anyway the 5 volts from your funcube will **not** be any good, depending on what signals you want to receive and what polarisation you want either 12-13volts or around 18Volts (but not in between the 2 values).
This pdf document may help http://titaniumsatellite.com/downloads/Guides/LNBF%20Install%20Guide.pdf
I believe most users use a satellite receiver to inject the DC voltage required using the signal pass through to take the signal to the SDR - I had a lot of components about the shack so I just built my own.
Another document you may find interesting http://www.tele-audiovision.com/eng/TELE-audiovision-1501/files/assets/basic-html/page-40.html - it's actually a review of the LNB but contains some interesting shots of the set up used.
The output from the LNB is quite high so your LNA probably won't be needed with your run of cable - make sure you use a low loss coax, something like RG6, at theses frequencies a lot of signal can be lost in poor quality coax
On 16/12/2018 at 10:20, Roland Fechter <fly-fechter@...> wrote: