Radio Astronomy
Admin
Julian Palmer Design Monopole Probe Assembly for Cantenna 12/12/2025
Our intention is to design a cantenna where fine tuning can be achieved experimentally in the same device without needing to re-make the cantenna or physically cut bits off the…
Ku-Band Interferometry
From the Society of Amateur Radio Astronomy Mailing List 12/12/2025: We operated a Ku-band interferometer with two 1.2-m dishes placed on a 10-m baseline in east-west direction. It is dismantled…
Start Simply, Build Slowly – The Best Advice for Amateur Radio Astronomy
Drift scanning works well for hydrogen line work, even with small antennas or dishes and I would strongly recommend starting with that. With regards to pointing/compass, make line on the…
Actions carried out to try and get ezCol.py working with USB Relay board 11/12/2025
Your ezCol.py does not start with a shebang (#!/usr/bin/env python3).Instead, the first line is just: ➜ That means Linux has no idea which Python interpreter to use. So when you…
How about 6 x 7.5 inch can for hydrogen line? How does that compare with a can 160mm diameter x 165 mm height?
How about 6 x 7.5 inch can for hydrogen line? Short answer: you can use a 6″ × 7.5″ can-sized aperture, but it’s very small for the 1420.40575 MHz hydrogen…
Is 145mm or 165mm better diameter for hydrogen line cantenna? Is a can that is 160mm diameter x 165 mm height a good choice for this?
Short answer: 165 mm is the better choice than 145mm can — it gives a larger aperture (higher gain / narrower beam) while still remaining single-mode for 1420.4 MHz. Below…
Successful use of hidusb-relay-cmd.exe from USB HID relay software v2.1 (latest 041225) (Win64): on 11/12/2025
Running Pavel-a hidusb-relay-cmd.exe from USB HID relay software v2.1 (latest 041225) (Win64): Download from releases on right side on screenshot below the Windows version of the software. This works on…
Metric equivalent of 1/8 inch diameter bolt to use as monopole probe on cantenna
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…