Posts

How to Build: Ham Radio 2 Meter Quarter Wave Antenna. Post #1618.

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If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=HkmD3Sgz7Q0. If you're having trouble connecting to your local or regional 2 meter repeater site, then this simple, low cost, and easy-to-build 2 meter quarter wave vertical antenna is what you need.  Randy Hall (K7AGE) does an excellent job of explaining the theory and operation of this simple vertical antenna. He takes you step-by-step through the design, construction, and use phases of this simple antenna. The antenna is small enough to fit into your emergency "go kit" or for use as a standby 2 meter antenna at your home station. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://am

NVIS-A Way to Build One. Post #1617.

NVIS-A Way to Build One. Post #1617. https://hamradiohawaii.wordpress.com/2018/09/14/nvi-a-way-to-build-one/ Author:  Stacy Holbrook (KH6JRM). Accessed on 15 September 2018, 1557 UTC, Post #1617. Please click link to read the full article and to view the supporting videos. Comment: Do you need a reliable, sturdy, and inexpensive antenna for local or regional communications?  If you do, a simple NVIS (near vertical incident skywave) HF antenna may be what you're looking for.  These high-angle radiators provide consistent coverage out to approximately 500 miles/810 kilometers, depending on propagation and weather conditions.  I've used a simple 40 meter NVIS antenna mounted 16 feet/4.87 meters above ground level to check in to the Hawaii Interisland Net. My signal reports vary from 57 to 59. In this post, Stacy (KH6OWL) provides a simple tutorial on getting started in NVIS communications. He provides drawings, photos, and three outstanding videos to explain the t

New 160 meter antenna and launcher. Post #1616.

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If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=51wEe-Wg1IQ. Besides the large size of most 160 meter antennas, getting the antenna high enough for a good take off angle presents special challenges. Most antenna references recommend getting dipoles at least 1/2 wavelength above ground to work decent dx--something that is often difficult to achieve if you don't have tall supports such as trees on your property.  Even if you have trees to support your antenna, getting the antenna launched into the upper branches can be quite a headache.  In this video, Dave and his friends solve that issue with a specially designed "pneumatic weight launcher" that puts antenna elements in a tree's upper branches without much stress.  I rather like Dave's design, having tried slingshots, casting rods, and bows/arrows with varying success. A nicely done video with valuable suggestions for those radio am

DIY folding VHF/UHF discone antenna. Post #1615.

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If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=snXHduQVe8Q. Here's a simple, inexpensive, and sturdy discone antenna that you can build at home and use in a variety of portable and emergency situations.  According to "SurvivalComms" this compact, field deployable VHF/UHF is broadbanded and will cover up to 1 GHz without significant SWR problems. The folded discone antenna kit weights only 28 ounces and uses about 30 feet of RG-58 coaxial cable as the feed line. The entire assembly can be carried in a small nylon bag.  Make one of these antennas for your "go-kit" or use as a standby antenna at your home. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://hamradiohawaii.wordpress.com. https:

Antennas for small spaces HOA, condos, and coops. Post #1614.

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If you cant's view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=RkNSFmkNSk8. Operating from a deed-restricted home, apartment, or condominium can be a genuine challenge.  Out-door antennas often perform better than the wires designed for indoor or limited spaces.  Alternatives to outdoor dipoles, verticals, and yagi beams can be found with magnetic loop antennas, indoor loops, and even mobile antennas adapted for indoor use. Such is the case in this post by Mark Etzey, who uses the popular Yaesu ATAS 120A mobile antenna for his small apartment.  If you carefully adjust the antenna and use an indoor counterpoise system, you can get on the air with a usable signal.  Mark offers several helpful suggestions for radio amateurs who want to use a HF mobile antenna for their home station. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org.

Installing Your Ham Radio in Your Vehicle, Tips and Tricks. Post #1613.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=UBzENxqQA_w. A nicely done video from "HamRadioConcepts" showing several options for installing  VHF or UHF equipment in your vehicle.  The discussion on proper fusing of the vehicle battery is especially interesting.  This video has many helpful tips and suggestions for your mobile ham station. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://amateurradionewsinformation.com (Amateur Radio News and Information). https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

How to Make an Amateur Radio Stealth Wire Antenna. Post #1612.

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If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=4KQEQJ5qeuw Here's another great, down-to-earth antenna idea from Callum McCormick (M0MCX), otherwise known as the "DX Commander."  All you need are thin wire for the antenna, Aluminum Scaffold Tubes, and some telescoping fiberglass sail board/wind surf masts to support your nearly invisible wire.  Callum says this simple, stealth antenna is "cheap, economical, and structurally sound." For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.Hawaii ARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://amateurradionewsinformation.com (Amateur Radio News & Information). https://www.eham.net. http://www.southgatearc.org. Thanks for joini