NanoVNA

Attending & talking at conferences, workshops & societies NanoVNA Radio observation in hydrogen line (1420MHz)

NanoVNA Mini-far-field antenna range from EuCARA Sept 2025

Admin January 13, 2026 No Comments

In September 2025, Jason Burnfield & myself delivered a workshop on creating and using a mini-far-field antenna testing range at home using a NanoVNA. Materials describing how this is done…

NanoVNA Radio observation in hydrogen line (1420MHz)

Designing & Constructing a Cantenna (Circular Waveguide Antenna / Tuned Cylindrical Waveguide) for hydrogen line radio astronomy (1420 MHz)

Admin December 25, 2025 No Comments

Here is what you need to build your own Cantenna: Doing the math:Use an online calculator, such as the one at https://www.jefatech.com/products/cnfbst?keyword=cantenna, or https://www.changpuak.ch/electronics/cantenna.php, https://www.wikarekare.org/Antenna/WaveguideCan.html to check can size and…

NanoVNA Radio observation in hydrogen line (1420MHz)

Block diagram, parts list and checklist for using coaxial cable to waveguide adapter for hydrogen line radio astronomy

Admin December 7, 2025 No Comments

Here’s a ready-to-use block diagram plus a practical minimal parts list and quick build/test checklist so you can turn your WR-650 waveguide-to-coax adapter into a full waveguide feed for 1420…

NanoVNA

How to use 2 orthogonal monopoles with phasing cable on cantenna waveguide to improve signal reception

Admin October 12, 2025 No Comments

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…

NanoVNA

Alex Pettit’s advice on how to be meticulous in matching and verifying each feed system on my dual monopole cantenna on LRO-H2(SCRT).

Admin September 28, 2025 No Comments

Andrew, if you Really want to do this you need to be Meticulous in Matching and Verifying Each feed system. It takes time & effort. 1) You MUST use software…

NanoVNA Radio observation in hydrogen line (1420MHz)

Adding 2nd monopole onto cantenna to improve signal reception

Admin September 7, 2025 No Comments

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…

NanoVNA

NanoVNAsaver Software Manuals

Admin August 23, 2025 No Comments

https://github.com/NanoVNA-Saver/NanoVNA_Software/blob/main/software_users_manual_r23.pdf https://github.com/NanoVNA-Saver http://www.spencerweb.net/Downloads/NanoVNA/nanovna.html https://new.zs1sci.com/posts/nanovnasaver

NanoVNA

Introduction to using NanoVNA

Admin July 7, 2025 No Comments

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 Testing radio astronomy equipment

NanoVNA vs TinySA

Admin June 17, 2025 No Comments

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…

Attending & talking at conferences, workshops & societies NanoVNA

Components I have made for Mini-Antenna Testing Range for EUCARA conference September 2025

Admin May 18, 2025 No Comments

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…

NanoVNA Mini-far-field antenna range from EuCARA Sept 2025

Designing & Constructing a Cantenna (Circular Waveguide Antenna / Tuned Cylindrical Waveguide) for hydrogen line radio astronomy (1420 MHz)

Block diagram, parts list and checklist for using coaxial cable to waveguide adapter for hydrogen line radio astronomy

How to use 2 orthogonal monopoles with phasing cable on cantenna waveguide to improve signal reception

Alex Pettit’s advice on how to be meticulous in matching and verifying each feed system on my dual monopole cantenna on LRO-H2(SCRT).

Adding 2nd monopole onto cantenna to improve signal reception

NanoVNAsaver Software Manuals

Introduction to using NanoVNA

NanoVNA vs TinySA

Components I have made for Mini-Antenna Testing Range for EUCARA conference September 2025

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NanoVNA Mini-far-field antenna range from EuCARA Sept 2025

Biggest amateur hydrogen line horn antennas

Is there any advantage to making a cantenna feed where the sides are not parallel?

Alex Pettit: SDR# > IFavg > HL3D > Rinearn-3D for Hydrogen Line Radio Astronomy