Posts

N7EAA's 65 foot vertical for 160M. Post #1255.

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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=LXcInIk1fGo. Here's a dual band top loaded vertical antenna that covers both the 160 meter and 80 meter amateur radio bands.  For this project, N7EAA used a MFJ pipe for $200, galvanized steel electrical fence wire, and inexpensive poly rope for guy supports.  You'll probably need some help assembling and erecting this antenna. Like all vertical antennas, you will need a good ground radial or counterpoise system.  In this video, N7EAA attaches his ground system to an aluminum plate at ground level. 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 which is updated each Friday afternoon). https://paper.li/kh6jrm/1430289353 (Amateur Radio News &am

Tom, K2BEW's Maple Leaf Studio Off Center Fed Windom Antenna. Post #1254.

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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=wDDQChjQra4. The Maple Leaf Studio offers some excellent antennas for those of us with limited mechanical abilities.  This video from Tom (K2BEW) shows us the popular Off Center Fed Windom Antenna from this manufacturer.  Tom does an excellent job of showing us the step-by-step process of assembling this multiband HF antenna. In this video, Tom uses a 37-foot/11.28 meters aluminum mast to support the antenna.  The antenna fits comfortably into his beautiful yard. 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 which is updated each Friday afternoon). https://paper.li/kh6jrm/1430289353 (Amateur Radio News & Information). Other sites of interest:

Homebrew antenna , 10-40 meter loop antenna. Post #1253.

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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=3T1LOGahiwY. Here's another HF loop antenna idea if you have some trees or tall supports in your backyard.  Marcus Schrader built this full-wavelength 40 meter loop (143 feet/43.59 meters) and suspended it 20 feet/6.09 meters above ground using a few trees in his back yard.  He uses a 4:1 balun along with a length of 450 ohm ladder line to feed the antenna.  Marcus uses this combination with an antenna "tuner" to cover 10 through 40 meters.  As you can see from the video, the antenna is fairly "stealthy". 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 which is updated each Friday afternoon). https://paper.li/kh6jrm/1430289353

Antenna simulator for small vertical monopoles. Post #1252.

Antenna simulator for small vertical monopoles. (http://www.472khz.org/pages/tools/antenna-simulator.php). Accessed on 16 September 2017, 2215 hrs, UTC. Please click link to read the full article. Comment: Now that the FCC has established rules and regulations for the 630 and 2200 meter amateur radio bands, radio amateurs can now expand their contacts with frequencies below the standard broadcast band. One of the prime concerns related to these bands, besides running low power and non-interference for existing services, is the type of antenna suitable for such low frequencies. It's possible to design a relatively small vertical monopole antenna that will perform well in the rf "basement", thanks to this antenna simulator for 472 kHz. Although this simple calculator isn't a replacement for software such as EZNEC, it will give you an indication on how this type of antenna will perform.  Just plug in the raw data about antenna type, antenna dimensions, and

FCC opens 630-and-2200-meter bands. Post #1251.

ARLB018 FCC opens 630-and-2200-meter bands; stations must notify UTC. Special announcement from HQ ARRL, Newington, CT, 06111. Accessed on 16 September 2017, 0800 hrs, UTC. The full text of this special W1AW bulletin is listed below. Comment: On Friday, 15 September 2017, the FCC opened the 630 and 2200 meter bands for licensed radio amateurs, subject to special rules and regulations of the FCC. Here is the announcement from HQ ARRL, Newington, CT, 06111: SB QST @ ARL $ARLB018 ARLB018 FCC Opens 630- and 2200-Meter Bands; Stations Must Notify UTC Before Operating ZCZC AG18 QST de W1AW ARRL Bulletin 18  ARLB018 From ARRL Headquarters Newington CT   September 15, 2017 To all radio amateurs SB QST ARL ARLB018 ARLB018 FCC Opens 630- and 2200-Meter Bands; Stations Must Notify UTC Before Operating The FCC has announced that the Office of Management and Budget has approved, for 3 years, the information-collection requirement of the Commission's  March 29  Report