Amateur Radio news from Italy
There are three connection possibilities to feed the multi-band copper cactus antenna with a single feedline or coax. However, it is imperative that you use the proper coax for the highest band of operation, RG58 just won’t cut it and even RG8 in lengths longer than 25 feet is marginal in 440 operation. For all
The advent of new, affordable MF/HF/VHF radios in the last few months from virtually all the major manufacturers, has spurred a migration by more and more Hams to the Six Meter band. I’m often asked, “What antennas are best for Six Meters?”. Before answering a question like this, I must first ask the Ham what
A simple 2.4 GHz double QUAD Antenna
This was my first AO-10 antenna. As goofy as it looked, I managed a few contacts with 10 Watts, including Brazil on SSB. This is a pair of 8-element quagi’s, set up for RHCP. Construction is simple, with no critical tuning elements. They are made from 1/2″ PVC pipe and # 10 wire (stripped from
If you have any interest in antennas at all, fasten your seat belts and hang on to your hats, because what you are about to read here is going to blow you away. Conventional wisdom concerning antenna matching and resonating is about to be shattered and the principles revealed here might just be the start
First build a regular MonoBand J-Pole from the Copper Cactus plans for a 2-meter antenna, leaving off the top pipe cap. Build a second J-Pole, which will look like an L-Pole, the vertical is 38-3/4 inches from the top of the antenna, down to the centerline of the horizontal member. The lower leg of the
Homebrew outdoor antenna to 2.4 GHz band.Antenna gain is comparable to panel antennas including the Freedom Antenna Set sold in Finland. Comparing is made simple by connecting antennas to same computer with Orinoco WLAN card and indicating results in Link Test of the Client Manager. My antenna has been found about 2 dB better gain
A 2.4 GHz 10 elements Yagi antenna hombrewed. Download the PDF files for full instructions. Full sized images and detailed instructions are listed here
Here is a high-performance hand-held beam antenna that is easy to build and guaranteed to improve your downlink from the LEO satellites over ANY rubber duck or mobile whip. Like many satellite operators, I own an Arrow Antenna. That antenna is a great performer, but sometimes it is impractical for me to use it–it is