If by “taper the waveguide down to a point” you mean replacing the flat shorted end behind the probe/feed with a pyramidal or conical taper that gradually narrows to a…
This framework is designed to support an aluminium window netting to reduce ground noise. However, as soon as I added the wood to this an immediate potential issue arose –…
I purchased one of these to make a cheap homemade WR-650 waveguide for hydrogen line work.
The SDR (NESDR) crashed a number of times when temperature locally got up to 32 C a few weeks ago, very unusual for us. The miniPC and SDR sits in…
I would like to extend the edge of my 150cm satellite dish by 40-50cm all around with some aluminium mesh. This does not need to follow the parabolic as it’s…
Result seems a bit high, when considering this following advice from ChatGPT: The resistance of aluminium window screen over 50 cm can vary enormously depending on how you measure it,…
This netting will extend perimeter by 40 or 50cm around the edge and help reduce ground noise (I hope). Am I doing anything wrong before I go further? Andy
Bob has designed and made a neat little patch antenna which attaches to a NanoVNA to produce a 1420MHz signal to use to test hydrogen line systems. (1) Attach patch…
The WR650 waveguide is an ideal choice to use with the SETI Horn of Plenty Hydrogen Horn Radio Telescope. I have noticed that 150mm x 50mm aluminium box section is…
For say a 10 inch telescope mirror what size dish would equal the same resolving power. And even more mind blowing A 60‑foot (18.3 m) radio dish at 21 cm has the…
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