Posts

Simple Ham Radio Antennas--HAM/Amateur Radio Antennas: Part 2b-Intro to Antenna Tuning and QRM. Post #456

Image
Here is part 2b of Milton's (KD8LON) video tutorial on HAM/Amateur Radio Antennas . If you have difficulty in viewing this video, please enter the following URL in your browser search box: https://youtu.be/M5uIzjhSQtw. In this segment, Milton focuses on antenna tuning, antenna analyzers, and QRM. The video is well-produced and uses the same radio and test equipment found in Part 2a. There's a lot of helpful information in this tutorial for any level of amateur radio experience. For the latest Amateur Radio news and events, please check out the blog sidebar. These news feeds are updated daily. You can follow our blog community with a free em-mail subscription or by tapping into the blog RSS feed . Thanks for joining us today! Aloha es 73 de Russ (KH6JRM). Related articles How to tune a 10 meter dipole Mars flights could damage the brains of astronauts. Post #203. Building a dipole antenna for your SDR tuner stick from an old set of headphones Updated Ama

Simple Ham Radio Antennas--Consumer Radio-HAM/Amateur Radio Antennas: Part 2a. Post #455.

Image
If you have difficulty viewing this video, please insert this URL into your browser search box: https://youtu.be/3exdjkuPbVk. A good, general introduction to antenna theory and practice from mjlorton (KD8LON). This video is part of a four-part series on Amateur Radio antennas. In Part 2a, KD8LON discusses some antenna basics, the use of antenna analyzers and problems presented by QRN and QRM (noise and interference). Some of the equipment used in this tutorial include: The K-Po WR2100 PLL synthesized World Band Receiver, the Yaesu FT-897 HF/VHF transceiver, Yaesu FT-950 HF/50 MHz transceiver, Yaesu VX-6 Submersible dual band VHF transceiver, Yaesu FT-817ND solar powered portable go-pack, Yaesu FRG-7000 Receiver, Rig Expert AA-200 Antenna Analyzer, a simple wire antenna, a Par Electronics End-Fedz EF 10, 20, 40 meter full half-wave antenna, and a MFJ Deluxe Miniature Tuner--MFJ-904H. Overall, an excellent introduction to antennas for the amateur radio operator. For the latest A

D-Star mobile setup with DVAP, Raspberry Pi and BRCK. Post #454.

Image
Nice mobile installation by Christopher Allsop. Christopher's mobile installation uses an ICOM-51 D-Star VHF handheld transceiver connect to a DVAP and a Raspberry Pi microprocessor in his car. The setup gets network access through a BRCK Wi-Fi and a 3G router modem. He used a "hot spot" device in his car to connect to his home computer. For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily. You can also get more news from my other amateur radio news sites: http://kh6jrm.net and http://paper.li/kh6jrm/1430289353. You can follow our blog community with a free e-mail subscription or by tapping into the blog RSS feed . Thanks for joining us today! Aloha es 73 de Russ (KH6JRM). Related articles Essex Ham promote amateur radio Can I Use My Ham Radio on Public Safety Frequencies? Updated How to connect a Raspberry Pi to a Wi-Fi network Updated Amateur Radio Emergency Service Manual Now On

Simple Ham Radio Antennas--Getting your antenna up in a tree without breaking the wire. Post #453.

Image
If you have trouble viewing this video please enter this URL into your browser search bar: https://youtu.be/Mg2yGn5TRPU. Well-done antenna installation from "Doctor Dave" using trees to support his antenna, rather than towers. "Dave" uses a method popularized in many of the old ARRL Antenna Books--using weighted paint cans on each end to keep the lines taught while allowing the trees to move in the wind without breaking the wire. With a few door springs and assorted tools, you, too, can use trees as antenna supports. When I did a similar project a few years ago, I had the help of a fellow ham who helped keep things in order and monitored the symmetry of the final antenna arrangement. An extra pair of hands really helps. For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily. You can follow our blog community with a free e-mail subscription or by tapping into the blog RSS feed. Thanks for joining

Simple Ham Radio Antennas--How To Tune A 10 Meter Dipole. Post #452.

Image
Excellent antenna tuning tutorial from Randy Hall (K7AGE). Although the information is directed to Technician Class Licensees, the general theory behind building dipole antennas can be applied to any Amateur Radio Band or License Class. Technician Class License holders can use a wide swath of 10 meters for CW, digital, and phone operations. The SSB phone segment between 28.300 MHz and 28.500 MHz is especially useful for those beginning  their ham radio  experience and license progression. When 10 meters "is in", world wide communication on 10 meters with simple antennas is common place. Randy discusses how to design, build, and erect a simple 10 meter dipole, which will give you hours of DX and local contacts at minimum cost. The math is simple and the instructions are clear. Once you design and build your 10 meter dipole, just attach a convenient length of 50 ohm coaxial cable (such as RG-58, RG-8X, or RG-8) as your feed line and get the antenna as high as possible.

Simple Ham Radio Antennas--Vertical aerials for HF short wave amateur ham radio bands. Post #451.

Image
Exceptionally well-done and ably narrated by Ray of the "Radio Workshop" in the UK . Ray provides an easy to understand basic tutorial on the theory, design, and construction of simple vertical antennas for HF , shortwave, and the Amateur Radio Bands. He shows ground-mounted antennas with and without ATUs (antenna tuning units or "tuners"). These simple antennas are easy to make, inexpensive, and perform well for the resources invested. With an adequate ground radial system, vertical antennas can provide hours of great DX and local chats with your ham radio friends. For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated frequently. You can follow our blog community with a free e-mail subscription or by tapping into the blog RSS feed . For more Amateur Radio news, please visit my other news sites: http://kh6jrm.net and http://paper.li/kh6jrm/1430289353. Thanks for being with us today! Aloha es 73

Simple Ham Radio Antennas--Chameleon Antennas F Loop Field Test Mar 2015. Post #450.

Image
If you have trouble viewing this video, please insert this URL into your browser: http://youtu.be/cpsFJRzaANc. Interesting test of Chameleon Antennas's new magnetic F Loop Antenna. The test was conducted in March 2015 near Thunder Bay, Ontario overlooking Lake Superior by Fred (VE3FAL) and Gary (VE3ODE). The rigs used for the test were an ICOM IC-703 running 10 watts and an Elecraft KX3 running about 5 watts. The results are impressive given the small size of the antenna. This new F Loop antenna would make a nice emergency or portable antenna. For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily. You can follow our blog community with a free e-mail subscription or by tapping into the blog RSS feed. Thanks for joining us today! Aloha es 73 de Russ (KH6JRM).