Working on a dual S/X feed supporting simultaneous RHCP/LHCP RX . There are 2x S band BPFs, 2x LNAs connected to Lime's Ch1/Ch2. A simple GRC flowgraph streams over UDP to 2 SatDump instances.
The coupler/120 deg phase shifter has been based on Maarten Baert's inspiring work.

NOAA 18, 2247.5 MHz, AOS 0916 UTC

Circular polarization with GNU Radio Typically weather / earth observation satellites use right hand circular polarization (RHCP) in their downlinks in L and S band. At the receiving station, a helical or patch with LHCP polarization …

Following up , some more details and notes about combining 2 linear orthogonal (V/H) polarizations in Gnuradio and a link to the grc file have been uploaded to my page. Please see below:
sv1cal.com/circular-pol...

Very first attempt to simultaneously receive L-band (1698 MHz) and S-band (2247.5 MHz) NOAA-19 downlinks using the experimental L/S/X feed.

Working on a L/S/X triband feed for WX/EO satellites. Have been using a partially 3D printed L/X feed so far, but it was time for an upgrade. Pictures show the ugly prototype in the focus of my 1.4 m dish on the balcony. It looks promising but more testing is needed of course.

Landsat 9 , 2282.3 MHz

NOAA-19, 2247.5 MHz, AOS 08:07 UTC

NOAA-18 , 2247.5 MHz, AOS 20:11 UTC

DIY fiberglass dish experiments December 2024 A while ago, I made a fiberglass copy of a small 80cm offset dish. Covering it with aluminum tape worked very well, made the surface reflective and Ku band TV signals where on par wit…

A while ago, I made a 80cm fiberglass dish. Alu tape made the surface reflective . Here I am exploring other alternatives like adding copper powder to polyester resin or painting it with conductive paint followed by copper plating . More on the page below:
sv1cal.com/diy-fibergla...

Nice ! What brand/model is it ? I guess will have to do a similar alignment. Thanks !