Posts

Vertical Dipole in Tree. Post #1657.

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If you can't view video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=RI2_T-LeYEU. If you have a tall tree on your property, you may want to try this antenna.  As Stan Gibilisco (W1GV) explains, this multiband HF antenna can be used where space is at a premium.  Each leg of the dipole should be at least a 1/4 wavelength at your lowest frequency of use.  An antenna transmatch (i.e. "tuner") and ladder line will permit multiband use.  Try this simple antenna and "work DX on a budget." 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://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha e

Jeri Ellesworth (AI6TK) Pacificon keynote talk released. Post #1656.

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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=tOb9BIYjvA0. If you couldn't attend Pacificon 2018, you missed one of the true highlights of the Amateur/Ham Radio event calendar. Thanks to Randy Hall (K7AGE), we have a recording of one of the most inspiring and passionate defenders of the Amateur Radio Service speaking before an overflow crowd at this prestigious meeting of radio amateurs.  Jeri Ellesworth (AI6TH) shows a love and in-depth understanding of what Amateur/Ham Radio means to our communities and to ourselves.  A masterful stroke of optimism for an age of cynicism and doubt. 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://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://b

Using a wire fence as an HF antenna. Post #1655.

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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=IRh11KM2w8A. Almost any metal object can be used to receive HF signals--in this case, we find a wire fence pressed into service as a random length wire RECEIVING antenna.  The operating position consists of a Yaesu FT-817 and a MFJ 16010 L-match "tuner".  Transmitting with this antenna could present some safety and equipment problems, although this operator didn't mention any difficulties in getting the fence to work.  Antenna experimentation can be a learning experience if safety procedures are followed. 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://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. ht

Installing a Mobile Radio in Your Car. Post #1654.

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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=FzBDf-JEa3w. Installing a mobile radio in your vehicle can be easy if you follow the steps outlined by Pete Hadley (K6BFA) in this video.  Pete shows how he installed his 2 m/70 cm transceiver and antenna in his vehicle without drilling large holes in the vehicle body and by keeping all wires and cables out of sight.  A very efficient and operator- friendly installation. 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://oahuarrlnews.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).

EA5ON Mobile HF Antenna. Post #1653.

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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=1Da43_y_OMw. Here's a simple, cheap, and efficient mobile HF antenna from Duncan (EA5ON).  According to Duncan, the ball mount is from Hustler; the 12-ft/3.65-m extendible whip and screwdriver coil come from MFJ; and the mast extension is from the DX Engineering staff.  While this arrangement makes for an excellent mobile antenna, Duncan feels it's best to operate this antenna system from a stationary position, such as a park, beach, or campground.  For more information on this antenna, please visit http://www.ea5on.com. 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). http://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnew

Hanging Ham Radio Antenna From Trees W/Slingshot. Post #1652.

Hanging Ham Radio Antenna From Trees W/Slingshot. Post #1652. Source:  https://www.youtube.com/watch?v=UDkbNcbQl2o. Author:  KM6JUR. Please click link to download the video. Comment: Tall trees on your property can serve as ideal supports for your antennas, be they HF, VHF, or UHF.  The major problem with tree-supported antennas is getting all those wires and small beams into the upper regions of the tree without incurring antenna damage or lost wire. In this video from KM6JUR, we see how a simple slingshot, fishing reel, a few sinkers/weights, and some fishing line can launch your antenna at a desirable height for DX contacts.  Of course, as this video points out, you may have to try a few times before your antenna is firmly secured in a tree. Although there are several commercial antenna launchers available, I find a do-it-yourself approach more to my liking.  My launch system is similar to the one used in this video.  I have an old Walmart "Marksman Folding Sling

5/8 wave J-pole antenna for 145 MHz. Post #1651.

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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=fEdy7mbZ5ms. Thanks to Pityu Nagy for this fascinating video on how to make a 5/8 J-pole antenna for 145 MHz.  Pityu was able to use some copper tubing, a steel wire from an old CB antenna, and a homemade coil to make this efficient and simple 2 meter antenna.  This would make an excellent emergency 2 meter antenna for your club or 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. https://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. http://www.southgatearc.org. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).