This website contains notes on my amateur radio activities and projects that I have worked on.

First licensed in 1979, my main interest is weak signal operating on 144MHz, especially Moonbounce or EME (Earth-Moon-Earth) communication.

You can contact me using the email address on my QRZ.COM page or via admin (at) g8rwg.uk

73 Niels, G8RWG

Options for using the Elecraft K4 for 2m EME

Dec 4, 2020
Background Elecraft announced the K4 transceiver in May 2019 and I saw the radio at Ham Radio, Friedrichshafen in June 2019. I placed an order for a K4D (with an optional K4HD should I need it), in July 2019. Units started shipping in November 2020, maybe delivery will be Q1 2021? Elecraft K4D The K4D is a dual receive, direct sampling software defined radio (SDR) covering 100 kHz - 54 MHz.

BM10T Mast - change to luffing system

Jul 19, 2020
I recently installed a second-hand Radio Structures BM10T lattice mast for my 2m EME array. The BM10T is similar to a Versatower but has a simpler luffing arrangement with the wire attached to the bottom of the lattice section and running through two pulleys either side of the base post and up to the winch. The pulleys simply act as guides for the wire and provide no mechanical advantage. This makes luffing hard work with the antennas installed.