Posts

Quarter Wavelength Vertical Needs No Trimming

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Here are some more vertical antenna suggestions from Australian radio amateur Peter Parker (VK3YE). In this case, Peter builds a vertical antenna that requires no trimming to be operational.   If you can't see the video, please insert this title URL into your browsers search box: https://www.youtube.com/watch?v=9ObV_OpK1rQ This is post 2745 in a continuing series of simple ham radio antennas. Here are some comments from Peter: You don't always need to precisely cut your antenna if you have a part of it coiled up and switched. Here I take 4.6m of thin insulated wire and connected it to five shorter pieces (about 10cm long) wired across a rotary switch. This allows its length to be varied. The advantage of this is that you can cover about a 10% frequency range rather than the 3% that a fixed length antenna covers. This experiment was with a 1/4 wavelength vertical on 14 MHz but if you want to do it for 28 MHz I would suggest using about 2.3m for the vertical element and pieces of

Random Wire Antennas using the LDG 9:1 UnUn

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An informative, easy-to-understand discussion of Random Length Wire Antennas from Peter of UK's Waters & Stanton Ham Radio Store. Random wire antennas are good antennas if you use a 9:1 UnUn to match the high antenna impedance of the wire to the low impedance of your transceiver. Peter does an excellent job of explaining how the LDG 9:1 UnUn fulfills this difficult requirement. If you can't see the video, please insert this title URL into your browser: https://www.youtube.com/watch?v=IpGzBPtkxRg This is post 2744 in a continuing series of simple ham radio antennas. Here are some general comments from Peter: The Random Wire Antenna is popular with Ham Radio operators around the world. But how does it work, and does it work! Peter g3ojv, takes a look at it and relates his experience. https://www.balundesigns.com/content/... https://hamradiostore.co.uk/ldg-ru-9-... ----- Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

Wire Antenna Basics

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Thanks to Callum McCormick (M0MCX) for this excellent introduction to the theory and practice of wire antennas. The video covers a variety of topics, including resonance, height above ground, radial systems, and shortening of antenna elements. If you can see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=qs-iC5mTo9k This is post 2743 in a continuing series of simple ham radio antennas. Here are some general comment from Callum: Let's look at antenna basics. Height above ground, resonance, folding back elements and more. Thanks to the Telford and District Amateur Radio Society for hosting my talk. 73. Callum. ----- Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

DIY Multi-Band Dipole for 20 and 40 meters

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Thanks to W4AOX for this simple, inexpensive HF antenna covering the 20 and 40 meter Amateur Radio bands.  The design is a variant of the popular "Fan Dipole" which has been used by radio amateurs for decades. The video takes you step-by-step through the design and building of this basic HF antenna. Here are some general comment from W4AOX: In this video I go through the steps to build a very simple, inexpensive multi band dipole antenna for the 40 and 20 meter amateur radio bands which can be used either at your home or in the field for off-grid emergency communications. Additionally, this DIY wire dipole antenna will also work on the 15, 12, 10 and 6 meter bands if your radio has an ATU or you have an external tuner. This exact DIY Dipole Antenna has allowed me to work and confirm 26 countries, all 50 U.S. states and every continent. Parts List: 1ea. 1G 1/2" PVC Box 1ea. Cover 1ea. SO239 Connector - https://amzn.to/2ZqFDQ2 4ea. 3/8 eyelet crimp or solder electrica

DIY multi-band vertical HF antenna

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Thanks to Juddie of "J & J True Outdoor Adventures" (WD8WV) for this simple, elegant, and almost stealthy multi-band HF vertical antenna. The video takes us from design to finished antenna with a minimum of time and effort.  This antenna can be used both at home and in the field. If you can't see the video, please insert this title URL into your browser search box:   https://www.youtube.com/watch?v=esjkwADkWB8 This is post 2741 in a continuing series of simple ham radio antennas. Here are some general remarks about the project: This video is a short demonstration of a homebrewed vertical antenna using a inductive coil that I made. It somewhat resembles a Wolf River Coil. I didn’t record video or pictures of me building it, wish I would have. DE WD8WV #amateurradio #verticleantenna #qrpantenna ----- Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

3 Portable HF Antennas

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    Thanks to Adam (K6ARK) for three simple, inexpensive HF antennas that can be used both at home and in the field. The video shows us how to make a random-length wire antenna, an end-fed antenna, and a basic dipole antenna. Make one of these antennas for your emergency "go-kit" or as a spare antenna for emergencies. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Yl1zdgWtbQk This is post 2740 in a continuing series of simple ham radio antennas. Here are some comments from Adam: My picks for SOTA and Portable Ops are tailored to my primary applications. Every antenna is a compromise in one way or another, and these three suit my needs in each respective application. There are certainly other great options. Size and weight are priorities for me typically, and these antennas are my top picks for most of my operations. What's your favorite portable HF antenna? Tell us in the comments below or post

How to build a simple, portable 20 meter Antenna

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Here's nice antenna idea from Kevin (W6RIP). This 20 meter antenna is ultra-light, totally portable, and suitable for both home and field use. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=zqi8064bi74 This is post 2739 in a continuing series of simple ham radio antennas. Here are some comments from Kevin: oin me in building a new simple ultralight Antenna for going portable. Showing how easy it is to get on the Air from a SOTA peak. My solid gear choices after hours and hours of careful research and returns. The Garmin Mini is a champ https://amzn.to/2FEY0Z0 My ultralight hiking down jacket https://tinyurl.com/y9ku8qw4 My ultralight day pack https://tinyurl.com/y89myw7z Garmin InReach Mini https://tinyurl.com/y9lejrof My bivy choice https://tinyurl.com/ybv9vhux My cold weather sleeping bag https://tinyurl.com/y8986zd3 Sleeping air pad https://tinyurl.com/ybmsedqf My headlamp choice. Lov