Feed Two 50 Ohm Antennas from One Transmitter
Wes Cardone presented at the July 2024 meeting of the Chelsea Amateur Radio Club the principles of directed energy by means of multiple antennas. The principle is that you rob from the rich and give to the poor. We decide on a pattern that we want our dual-antenna configuration to produce and then place the two antennas a defined distance… Read more »
Dexter Library Presentation 6-12-2024
The 2024 Chelsea Amateur Radio Club Swap and Shop
An Abused Transceiver
I will take the blame for allowing my Kenwood TM-V71A transceiver to be abused. Witness the result of my abuse illustrated in Figure 1. The DC power cord has become horribly frayed and worn. And that to the point of an imminent short! But let this be a warning to others to mind what is going on with your equipment… Read more »
Santa Barbara Amateurs K6TZ Losing Site
Who is Hiram Percy Maxim?
Hiram Percy Maxim (September 2, 1869 – February 17, 1936) was an American radio pioneer and inventor, and co-founder (with Clarence D. Tuska) of the American Radio Relay League (ARRL). Hiram Percy Maxim is credited with inventing and selling the first commercially successful firearm silencer, and also with developing mufflers for internal combustion engines. He created the American Radio Relay League (ARRL) in 1914 as… Read more »
New Life Member!
Antenna Feedline Optimal Length for Resonance
Updated 4-18-2024 I recently discovered a YouTube video that shows how to cut an antenna’s feedline length to achieve resonance (See below). I then discovered that there are many such erroneous YouTube videos telling you that you can use “jumpers” to improve your antenna performance. There are no benefits to these practices! But this begs the question… Why? On the… Read more »
April Meeting: EZNEC Antenna Segments Made Easy
More on EZNEC at the April 2024 club meeting. Have you dabbled with EZNEC antenna modeling software (or any of the other free NEC derived antenna modeling software applications) and found it just did not work out for you? Join the crowd. At the April meeting of the Chelsea Amateur Radio Club, Wesley Cardone (N8QM) will give a third presentation… Read more »