An 1/8-inch diameter bolt is 3.175 mm in metric.The nearest standard metric size is: ✅ M3 bolt (3 mm diameter) Alternatives If you need something closer to the exact 3.175…
It is a relay for 5V signal control that can be applied and used in areas requiring various contact control. It can receive a 5V signal and control the power…
The SRD-12VDC-SL-C is a small and dependable relay. It uses 12V DC power. It has SPDT contacts that switch between two circuits safely. This relay can handle up to 10A…
A choke can be added to a cantenna feed to improve performance by suppressing unwanted common-mode currents on the outside of the coaxial cable shield. This results in a cleaner…
This calculator calculates the optimal dimensions of a Pyramidal Horn. Click on link below to see examples of calculation for hydrogen line radio observing (1420 MHz): https://www.astronomy.me.uk/wp-content/uploads/2025/12/Pyramidal-Horn-Calculator-with-examples-091225.pdf
Below is a complete, practical guide to designing and building a 1-metre-aperture horn antenna for 1420.405 MHz suitable for hydrogen-line work. I’ll give you dimensions, materials, flare angles, feed options,…
In normal retail use paint tins are not made of stainless steel. Here’s the breakdown: ✔ What paint tins are made of Most commercial paint cans are made from tin-plated…
Creating a geodesic dish can be an exciting project. These structures are efficient, robust, and aesthetically pleasing. Here’s a detailed guide to help you plan and construct a geodesic dish.…
Short answer: maybe — but probably not the way you hope. Putting a smaller 2.5 L can inside a larger 5 L can will change the electromagnetic environment of the…
Below is the simplest and most reliable way to add an effective quarter-wave choke to a hydrogen-line cantenna. This is a standard method used on feedhorns to reduce spillover and…
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