Testing Right Nooelec 1.4GHz Mesh Dish 26/2/24
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As part of my process for working out why I can’t get my interferometer, today I tested the right Nooelec 1.4GHz 60x100cm mesh dish. Results below = successful detection of…
Radio observation in hydrogen line (1420MHz)
Making Hydrogen-Line (1420MHz) Cantenna
At last I am having a go at making myself a Cantenna! If this works it will demonstrate that I can make a full hydrogen line radio telescope for <…
Trying to work out why my 1420MHz AD8302-based radio interferometer does not work
Unfortunately, I still can’t get my 1420MHz interferometer to work. Have received 2 excellent pieces of advice from Jan Lustrip and Mike Otte, pasted below – today I have made…
Effect interference from interferometer box on Ptarmigan array computer 13/02/2024
Click on link to read results of tests I conducted this evening that show that my Interferometer Computer Box 1-2m away from my Ptarmigan Array Computer Box significantly interferes with…
Testing AD8302-based interferometer at LRO using Signal Generator
AD8302-based interferometer uses 2 x Nooelec 1.4GHz mesh 60cm x 100cm dishes and 3 x Nooelec SAWBird H1 LNAs on each leg. Tested using Latnex Signal Generator 1.4GHz at +15dB…
Testing voltages on outputs AD8302 board interferometer Jon Lustrup vs (Andrew Thornett) 26/1/2024
Jan kindly tested his AD8302 board to see what voltages he gets – and I have similarly tested mine today. Results below. Andy http://astronomy.me.uk/wp-content/uploads/2024/01/Testing-voltages-on-outputs-AD8302-board-interferometer-Jon-Lustrup-vs-Andrew-Thornett-260124.docx
Processing additive interferometer data 21-220124 gain 50 using ezRA
Data from 21-22/1/2024 @ LRO – 5m distance between 2 x Nooelec 1.4GHz 60x100cm mesh aerials
Lessons learnt regarding interferometer yesterday!
Interferometers need hardware bias tees for SAWBird H+ 1420MHz filters with cascaded amplifiers, (which they also need as AD8302 chip requires certain level power input on SMA connectors to work)…
Advice on how to progress with my interferometer based on AD8302 amplitude phase comparator board 8/1/2024
Correspondence with Jan Lustrup: Hi Andy…. You want to test changes of phase between the ports, not frequency! Use the same frequency generator to a 2 way power splitter. One…
Schematic of Ted Cline’s Additive Interferometer Nov 2023
Click below to view a schematic of Ted Cline’s Additive Interferometer. Andy http://astronomy.me.uk/wp-content/uploads/2024/01/Schematic-of-Ted-Clines-Additive-Interferometer-Nov-2023.pdf