Here’s a practical “all the ones that matter” list, with 2025 peak nights and typical peak rates (ZHR under dark,

Or….Options in the “RF switching without the clacky bits”! A solid-state coaxial relay is basically an RF switch that uses

ChatGPT: For 1420 MHz reference switching where speed doesn’t matter, go with a latching electromechanical DPDT transfer (coaxial) switch. It gives

Question: I am concerned that I have made a bad choice by buying Tohtsu CX-520D coaxial relay from ebay to

Tohtsu CX-520D coaxial relay purchased from ebay Nov 2025: Specifications: Three x type N female connector, has a common and

From Alex Pettit, via SARA Mailing List, 5/11/2025: Andrew, see if this analogy helps : The Top 3 Data/Drift Pair shows

What if any is potential benefit for adding filtering and amplification at antenna in meteor scatter detection arrangement at 143.050

Information on MLAstro SHG 700 Spectroheliograph accessed 5/11/2025 from First Light Optics, UK, website: https://www.astronomy.me.uk/wp-content/uploads/2025/11/MLAstro-SHG-700-Spectroheliograph-First-Light-Optics-acc-051125.pdf

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