Inmarsat L-Band signals from both CONUS and POR need to be routed to various receivers and SDRs, this distribution system is a pretty simple solution (as shown below).
It’s based on taking an L-Band signals from a dish, where pre-amplification at the feed is already done and then feeding it to another L-Band amplifier, followed by a band-pass filter (since the previous amplifier is rather wide) and then finally to an L-Band splitter. Various receivers and SDRs are then connected to the output of the splitters. The amplifiers, band-pass filters and splitters are all from mini-circuits. Another view is shown below.
The two L-Band amplifiers require 12V for proper operation. Control of the supply voltage is feed through a “web relay” for remote control. The web control relay is a compant called KMtronic – thet are available on Ebay. Below is a closeup of the web relay.
There is some built in web server application that you can access from ant browser as shown below.
While it’s convenient to have access via a web browser I prefer to use a standalone application, so that will be my next project, stay tuned.