Hardware
Admin
Radio observation in hydrogen line (1420MHz)
SETI Horn of Plenty (Hydrogen Line Pyramidal Horn Design Antenna)
Dipole vs radio dish or horn
If your “two cables joined in the middle, held aloft on poles with a single feed down the centre” is a centre-fed wire dipole / inverted-V style tuned to 1420…
Adding 2nd monopole onto cantenna to improve signal reception
Two monopoles at 90 degrees in cantenna One connects to splitter immediately Two connects via coax either 1/4 wavelength or 5/4 wavelength (more practical length = 26.5cm x 66% (velocity…
Eduard’s list stuff needed for maser observing
My article on the mini maser telescope can be found in the July-August 2022 SARA journalTo summarize what you need:Tracking mount; solid satellite tv dish; Norsat 9000LD LNB; Leo Bodnar…
To set dual tuner mode in SDRuno
To set dual tuner mode in SDRuno, you need to be using an SDR device that supports multiple tuners (e.g., the RSPduo from SDRplay). If you have an RSPduo, here’s…
Introduction to using NanoVNA
Original Powerpoint file by myself downloadable from link below. https://www.astronomy.me.uk/wp-content/uploads/2025/07/NanoVNA_Hydrogen_Line_Basics.pptx
NanoVNA vs TinySA
The TinySA and NanoVNA are both compact, affordable test instruments used in radio frequency (RF) and electronics work, but they serve different primary purposes: 🔍 TinySA (Tiny Spectrum Analyzer) Purpose:A…
Components I have made for Mini-Antenna Testing Range for EUCARA conference September 2025
I am running a NanoVNA workshop at EUCARA 2025 at Harwell Campus and as part of this I am going to demonstrate a mini-antenna testing range = I have been…
Attending & talking at conferences, workshops & societies
NanoVNA
Radio observation in hydrogen line (1420MHz)
Making a 2nd cantenna for the antenna testing range in the NanoVNA workshop at EUCARA 2025
In September 2025, EUCARA is being held at Harwell Campus in UK. I am giving a talk and also running an introductory workshop on using NanoVNAs to test antennae/aerials. As…
A simple way to test an antenna with a NanoVNA
A simple way to test an antenna with a NanoVNA involves connecting the antenna to the NanoVNA, calibrating the device using open, short, and load standards, and then measuring the…