Following from Alex Pettit by email 4/11/2025:

On 2025-11-04 03:27, ‘Andrew Thornett’ via Society of Amateur Radio Astronomers wrote following in bold, then Marcus Leech responded with

I made following comment on SARA mailing list 3/11/2025. “I was talking about the Nooelec SAWBird H1 LNA, which it

The Heat Index is one of the most useful composite weather measures, especially for gauging human comfort and safety in warm conditions.

There are a few possibilities depending on what you’re interested in:

These results were presented by Andrew Sutkowski at the BAA Hydrogen Line Sub-Group Meeting 3/11/2025. His preference is the WVURAIL

In a cantenna for 1420 MHz, how far from bottom of can should be the monopole? Short answer: place the

Andrew Sutkowski checked his feed and found monopole probe made of 1/8 inch copper tube far better at picking up

Here’s a comparison of typical power consumption (no peripherals or display) for each device, measured at the wall under different workloads.

A Kumar choke (often called the VE4MA or Kumar feed/choke) is a choke-ring / cavity around a horn/feed that suppresses unwanted