Simple Ham Radio Antennas

If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=cgdP8ao71Cc. Here's another great idea for a temporary portable or emergency HF antenna designed for field use.  In this video, GUERRILLACOM designs, builds, and operates an effective NVIS (near vertical incidence skywave) dipole antenna. NVIS antennas are effective omnidirectional antennas that can cover local, state, and regional communications requirements.  This type of low-level dipole antenna is perfect for local nets, roundtables, and "rag chews."  Just design the antenna for the lowest HF band of use, feed the antenna with balanced line, attach a 1:1 or 4:1 current balun, run 50 ohm coaxial cable from the balun to your antenna "tuner", and you're ready to go. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislan

ZS6BKW Antenna (https://w2lj.blogspot.com/2017/hmmmmmmmm.html). Author:  W2LJ. Accessed on 20 November 2017, 0125 UTC. Please click link or enter title URL into your browser search box to read the full article. Comment: The G5RV antenna and it variants are great tools for antenna experiments.  One of the more popular G5RV dipole antennas is the ZS6BKW, which is an optimized G5RV covering the 10, 12, 17, 20, and 40 meter amateur radio bands without the need for an antenna "tuner".  The 6, 15, 30, and 80 meter amateur radio bands can be worked with an antenna "tuner" with some loss of performance and efficiency. In this post by W2LJ, we see a preliminary design that will cover the 10,12, 17, 20, and 40 meter amateur radio bands without a "tuner".  All specifications are given, including total antenna length, the length of the 450 ohm matching section, the type of choke or current balun required, and the approximate lenght of 50 ohm coaxial cable n

Wire Antenna Calculator (http://www.ws6x.com/ant_calc.htm) Author:  Jim Clymer, Jr (WS6X). Accessed on 19 November 2017, 0255 UTC. Please click link or enter title URL into your browser to read the full article. Comment: If you experiment with HF amateur radio antennas, this Wire Antenna Calculator from Jim Clymer, Jr. (WS6X) will save you a lot of time as you configure and trim your HF antenna ideas.  I've made a copy of the article for my reference library, since I tend to try many antenna designs at my QTH. Here are the main antennas discussed by Jim: Standard Flat Top Dipole. Inverted Vee. Quad Loops. Equilateral Delta Loops. Full Wave Loops. Each section carries some basic antenna theory and construction tips to maximize the performance of these popular antennas. The calculator is simple.  All  you have to do is fill in the calculator form and press the calculate button. For the latest Amateur Radio News and Information, please visit these websites: ht

NVIS: Near Vertical Incidence Skywave (http://www.arrl.org/news/view/the-doctor-will-see-you-now-43) Accessed on 17 November 2017, 1630 UTC. Authors:  Steve Ford (WB8IMY) and Joel Hallas (W1ZR). Please click link or enter title URL into your browser search box to access the podcast. Comment: "NVIS:  Near Vertical Incidence Skywave" is the topic of the current issue of the "ARRL The Doctor is In" podcast.  The "ARRL The Doctor is In" is sponsored by DX Engineering and  covers "all things technical." The twice monthly podcast features hosts, QST Editor-in-Chief Steve Ford (WB8IMY) and the "Doctor", Joel Hallas *W1ZR), who discuss a wide range of technical issues. You can access the podcast directly by visiting https://www.blubrry.com/arrl_the_doctor_is_in/ For the latest Amateur Radio New and Information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https

If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=8ZmyvtMvEGY. This video is another great production from Ray of the "Radio Workshop" in the UK.  In this video, Ray provides all of the theory, construction practices, and uses of the classic "doublet antenna."  This old design can be used for both single and multiband use, depending on what feedlines and antenna lengths you choose. If you prefer the multiband approach, then this video is for you.  The concept is simple:  build a dipole antenna for the lowest frequency of use, feed the antenna with balanced line (300 ohm tv ribbon, 450 ohm ladder line, or homemade 600 ohm balanced line), run the balanced line into an antenna "tuner" that handles balanced line or connect the balanced line to a 4:1 current balun, and use a small length of 50 ohm coaxial cable to connect the balun to your antenna "tuner."  Place the "