Posts

Making open wire feed line

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=yrREQyMI7RI This is post 2337 in a continuing series of simple ham radio antennas. Thanks to Australian radio amateur Peter Parker (VK3YE) for this simple way to make a balanced, open wire feed line for your HF antenna.  If want multi-band performance from a single HF wire antenna, then using a balanced (open wire) antenna feed line is the way to go. Here are some general remarks from Peter: Open wire feedline is a cheap and low-loss feedline ideal for feeding HF dipoles. Open wire can tolerate significant impedence mismatches without adding much loss and in conjunction with a balanced antenna coupler allows multiband operation on a single dipole. Unlike a coax fed antenna the length of the dipole is not critical but for best efficiency aim for a minimum 3/8 wavelength at the lowest operation frequency (ie 30 metres for 3.5 MHz or the 80 met...

2 element beam for 20 meters from gw0jxm

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IPJV45MbWzM This is post 2336 in a continuing series of simple ham radio antennas. Do you want an antenna with modest gain that works in both directions?  Then, perhaps, a modified W8JK 2-element beam will fit your requirements. Thanks to Andy (GW0JXM) for this fairly simple 2-element 20 meter beam that is bidirectional broadside to the elements.  You may work both long and short path with out major adjustments to the antenna. Here are some general comments from the author: "In this video I show you a lightweight two element mono band beam for use on the 20 metre band. Click on the "show more' box below for full details. I wanted to construct a beam antenna that I could easily raise and lower in windy conditions on my own.  At the end of the video I show a sketch of the dimensions and the costing for the materials for the e...

DIY Portable Discone Antenna

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=gTwzLquRcBU This is post 2335 in a continuing series of simple ham radio antennas. Thanks to Stuart (KB1HQS) for this simple, portable discone antenna.  The antenna is broad-banded and is a perfect VHF/UHF antenna for field operations, SOTA (Summits On The Air), and emergency communications. Here are some of Stuart's general comments: Build your own portable DIY discone antenna. This design is a modified version of "SurvialComms" on Youtube. https://www.youtube.com/watch?v=snXHd... My Hackaday.io Project Page: https://hackaday.io/project/169167-po... 73, Stuart KB1HQS.com ★ FOLLOW ME HERE ★ Website: KB1HQS.com Twitter: @KB1HQS Sign up for my free newsletter: https://kb1hqs.com/2016/10/12/contact... ----- For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http:...

49:1 End Fed Half Wave Multi-Band Antenna

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=RsgdcHeP6S0 This is post 2334 in a continuing series of simple ham radio antennas. If you need a compact, easily-made multi-band HF antenna for your home or portable ham station, then this end fed design from "Tech Minds" may be for you. Thanks to a 49:1 balun and a 110uH loading coil, this antenna covers the 80 through 10 meter Amateur Radio bands. Here are some additional comments from the author: Here we take a look at an End Fed Half Wave antenna which is resonant on many HF bands due to a 49:1 matching unit being used. Antenna Design Plans: http://www.infotechcomms.net/download... Would you like to help me fund a new camera for the Channel? Then visit my GoFundMe page here: https://www.gofundme.com/f/tech-minds... Products used in my videos can be purchased through my Amazon storefront. US ► https://www.amazon.com/shop/techmi...

New 160 Meter Antenna

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=51wEe-Wg1IQ This is post 2333 in a continuing series of simple ham radio antennas. I'll admit that this 160 meter dipole and its tower supports are far from simple, easy-to-make antennas.  This project requires lots of space and additional help from fellow hams. But, one can dream of such things while working the world from compromised sites with simple equipment.  I once attended an ARRL Field Day where such a "top band" antenna was used.  The antenna worked extremely well. Thanks to "AllAmericanFive" for this inspiring tutorial.  The important thing to remember is to get on the air with what you have.  Good luck in your next antenna project. ----- Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

2m/70cm Ground Plane Antenna

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=x-DPVuyU8Pg This is post 2332 in a continuing series of simple ham radio antennas. Thanks to radio amateur Dave Tadlock (KG0ZZ) for this simple, effective VHF/UHF (2m/70cm) ground plane antenna.  Most of the materials can be found at the nearest hardware store or building supply outlet. The antenna is perfect for local traffic and ragchew nets, as well as portable and emergency use. Dave's explanations are clear, simple, and easy-to-follow. This antenna would make an excellent weekend project. ----- Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

The NE0U 160m EZ-L Antenna at WX0V

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?reload=9&v=JbEwogtyWqI This is post 2331 in a continuing series of simpleham radio antennas. Thanks to WX0V for this fascinating antenna for the 160 meter amateur radio band.  The antenna is based on a design from NE0U which appeared in the March/April 2017 issue of the "National Contest Journal." Here are some general comments from WX0V: Here's a look at the NE0U 160 meter EZ-L antenna that I installed on December 2, 2017. The technical specs, originally appeared in the March/April 2011 issue of the National Contest Journal. For an updated version of this article, please email me or NE0U at our QRZ.com-listed email addresses. ----- For the latest Amateur/Ham Radio News and Information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.hamradioupdate.com. http://www.southgatearc.org. ...