Posts

Wilson's (W4BWH) new Carolina Windom 160 Amateur Radio Antenna. Post #1219.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Peq69M02Bvk. Sometimes, you have to let your imagination run wild, especially when it comes to antennas. In this video, Wilson Hines (W4BWH) finds himself with a lot of property to erect a huge antenna--in this case a 265-foot/80.79 meters "Carolina Windom Antenna." Wilson says he gets great signal reports on all Amateur Radio bands from 160 through 10 meters.  While most of us don't have the room for such a monstrous antenna, we can certainly maximize the space we do have by designing antennas that are efficient and well-built. For the latest Amateur Radio news and information, please visit these websites, http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https;//bigislandarrlnews.com. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast updated each Friday afternoon). https://paper.li/kh6jrm/143028

How To Build A Delta Loop Antenna. Post#1218.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=1uUVMaRFMv4. Here's a simple antenna that you may want to try for your next Amateur Radio activity. In this video, Hiram Vazquez takes us step-by-step in the design, building, and use of a Delta Loop Antenna.  The Delta Loop receives well, exhibits low noise, shows some gain over a dipole antenna (about 3 dB), and can be built from locally available materials.  You can feed a delta loop antenna with 50-ohm coaxial cable for single band use or with 450 ohm ladder line for multiband use. For multiband coverage, design the antenna for the lowest frequency of use, use 450 ohm ladder line as a feeder, and run the feeder through a balanced antenna "tuner" or a 4:1 balun before connecting the antenna system to your HF transceiver. For the latest Amateur Radio news and information, please visit these sites: http://www.HawaiiARRL.info. https://oahu

Ugly Balun 10 - 80 mtr. (RF Choke). Post #1217.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=tVVCbaRAUWk. Here's a handy device that will keep rf off your coaxial cable feed line. PD1AIV has done an excellent video tutorial covering the basic tools, materials, and construction practices needed in making an "ugly balun" or RF choke suitable for 8o through 10 meters. You will need around 19 to 21 feet (5.49 to 6.40 meters) of 50 ohm coaxial cable plus fittings to make the choke. PVC pipe, screws and nuts, and a few connectors will be all you need to complete this project. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https;//oahuarrlnews.wordpress.com. https://bigislandarrlnews.com. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast updated each Friday afternoon). https://paper.li/kh6jrm/1430289353 (Amateur Radio News & Information). Othe

Multiband Dipole Antenna. Post #1216.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v-wH0RNIr9cqE. Experimenting with antennas and limited spaces is fun and educational.  In this video, we see how a garden in the UK can be used to accommodate a homebrew dipole antenna.  According to "Daz", this 108-ft/32.92 meter antenna works on all bands from 80 to 10 meters "without any problems." Although coaxial cable is used as the feed line into an antenna "tuner", he concedes that ladder line would probably work better. He used an "air coil" made from 7 turns of coax at the base of the antenna. Despite the antenna's appearance and length to fit dimensions, it worked well. Don't be afraid of trying various antenna designs--that's part of the fun of Amateur Radio. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpr

Operating Stealthy from a Condo - CQ WPX SSB 2017. Post #1215.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MyML4xIGQ0. Nicely done video from Thomas (rcobo101)(AC2RJ), showing us how to operate HF QRP SSB temporarily from a HOA zone.  His antenna was supported on a 20 foot/6.097 meters telescoping fishing pole with a 16 foot/4.878 meters counterpoise.  His Yaesu-817 QRP HF transceiver did very well on the 20 meter band during the recent CQ WPX SSB 2017 contest.  Don't let deed-restricted properties stop your enjoyment of Amateur Radio. For the latest Amateur Radio News and Information, please visit these sites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.com. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast updated each Friday afternoon). https://paper.li/kh6jrm/1430289353 (Amateur Radio News & Information). Other sites of interest: Hawaii Science Digest (https://paper.li