Posts

HF Mobile Antennas and Their Installation. Post #1165.

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If you can't view this video, please enter this title URL into your browser search box: https://www.youtube.com/watch?v-MQI2G6uqQhw. A good, basic introduction to HF mobile antennas and their installation from the staff of Waters and Stanton Ham Store in the UK.  Before you commit to HF mobile operation, please review the suggestions given in this video.  If you already have a HF mobile Amateur Radio Station, consider using it in the upcoming ARRL Field Day event. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.wordpress.com. http://www.kh6jrm.info (breaking news for radio amateurs). http://www.arrl.org. http://www.arrl.org/arrl-audio-news (podcast updated every Friday). Other sites of interest: http://hawaiisciencedigest.com (science and technology news for radio amateurs). https://hawaiiintelligencedigest.com (trends in geopolitical intellig

Portable indoor antenna. Post #1164.

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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=JH0RiRHp2Bc. If your amateur radio operations are confined to the inside of your apartment or home governed by deed-restrictions (CC&Rs and HOAs), you may want to consider these MFJ antennas tested by Mark Elzey.  He does a good job of explaining how the MFJ-1661 and the MFJ-1668 work and what can be expected from them inside  your home.  Of course, it would be preferable to mount these antennas outdoors, but they do a reasonably good job inside.  A compromised antenna is better than no antenna. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.wordpress.com. http://www.kh6jrm.info (breaking news for radio amateurs). http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly news podcast issued each Friday). Other sit

Portable 20 Meter Rotatable Dipole. Post #1163.

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If you can't view this video, please enter this title URL into your browser search box: https://www.youtube.com/watch?v=8ijIICTN391. Helically-wound antennas can be a lot of fun to design, build, and use.  In this video, Bob (KC4FNE) shows us his home-brew 20 meter rotatable dipole antenna during a presentation before the Virginia Tech Amateur Radio Association meeting on 05 February 2014.  The only drawback to these helically-wound antennas is a fairly narrow bandwidth.  I've built a few vertical helix antennas for 40 and 80 meters where vertical space was limited.  All of them performed well, given the narrow bandwidths inherent in the design.  In Bob's design, a ground radial or counterpoise system is not required for operation. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.wordpress.com. http://www.kh6jrm.info (breaking news for radio a

mobile / emergency / field day vhf/uhf radio communications set up. Post #1162.

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If you can't view this video, please enter the title URL into your browser search box--https://www.youtube.com/watch?v=-wBDEYiIsyM. If you're thinking about adding a VHF/UHF station to your 2017 ARRL Field Day site on 24-25 June 2017, you may find this video by "DENMONKEY" useful.  In this video, DENMONKEY assembles his VHF/UHF station using a simple aluminum push up mast, a dual band vertical, and a small dual band yagi beam.  The antenna package is lightweight, easily assembled, and portable. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. htps;//bigislandarrlnews.wordpress.com. http://www.kh6jrm.info (breaking news for radio amateurs). http://www.arrl.org. http://www.arrl.org/arrl-audio-news (podcast issued each Friday). Other sites of interest: http://hawaiisciencedigest.com (science and technology news for radio amateurs). https://hawaiiintelligencedi

FCC Part 97 Ham Radio Changes. Post #1161.

FCC Part 97 Ham Radio Changes (http://www.southgatearc.org/news/2017/june/fcc-part-97-ham-radio-changes.htm). Accessed on 15 June 2017, 14:30 hrs, UTC. Source:  http://www.southgatearc.org. Please click link or insert title URL into your browser search box to read the full report. Comment: Amateur Radio operators in the United States have waited for almost five years to gain use of the 630 and 2200 meter bands, which were approved by the WRC-12 Conference in Geneva back in 2012. That dream will become fact sometime this summer.  On 14 June 2017, the FCC WRC-12 Implementation Report and Order was published in the Federal Register, making the WRC-12 recommendations part of the rules and regulations governing the Amateur Radio Service in the United States. Here are the main points of the Report and Order: • Part 97 - Allocation of 472–479 kHz and 135.7–137.8 kHz bands to the Amateur Service on a secondary basis. • Part 15 - § 15.113 Power line carrier systems  An electr