Radio observation in hydrogen line (1420MHz)

I have now tested this aerial with RTL-SDR Blog V3 SDR and SAWBird H+ LNA – the graph below demonstrates

As part of my process for working out why I can’t get my interferometer, today I tested the right Nooelec

At last I am having a go at making myself a Cantenna! If this works it will demonstrate that I

Unfortunately, I still can’t get my 1420MHz interferometer to work. Have received 2 excellent pieces of advice from Jan Lustrip

Click on link to read results of tests I conducted this evening that show that my Interferometer Computer Box 1-2m

AD8302-based interferometer uses 2 x Nooelec 1.4GHz mesh 60cm x 100cm dishes and 3 x Nooelec SAWBird H1 LNAs on

Jan kindly tested his AD8302 board to see what voltages he gets – and I have similarly tested mine today.

Data from 21-22/1/2024 @ LRO – 5m distance between 2 x Nooelec 1.4GHz 60x100cm mesh aerials

Interferometers need hardware bias tees for SAWBird H+ 1420MHz filters with cascaded amplifiers, (which they also need as AD8302 chip

Correspondence with Jan Lustrup: Hi Andy…. You want to test changes of phase between the ports, not frequency! Use the